Home / 81,456,090.80-122,184,136.20-45,176,385.20

Finding the Fourth Proportional to 81,456,090.80, 122,184,136.20 and 45,176,385.20

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Solution

The fourth proportional to 81,456,090.80, 122,184,136.20 and 45,176,385.20 is: 67,764,577.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,456,090.80 : 122,184,136.20 = 45,176,385.20 : x
  2. Step 2: Convert to fraction form
    81,456,090.80/122,184,136.20 = 45,176,385.20/x
  3. Step 3: Cross multiply
    81,456,090.80x = 122,184,136.20 × 45,176,385.20
  4. Step 4: Simplify right side
    81,456,090.80x = 5,519,837,602,300,465
  5. Step 5: Solve for x
    x = 5,519,837,602,300,465/81,456,090.80
  6. Step 6: Final answer
    x = 67,764,577.80

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.