Home / 81,659,178.80-122,488,768.20-51,426,090.80

Finding the Fourth Proportional to 81,659,178.80, 122,488,768.20 and 51,426,090.80

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Solution

The fourth proportional to 81,659,178.80, 122,488,768.20 and 51,426,090.80 is: 77,139,136.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,659,178.80 : 122,488,768.20 = 51,426,090.80 : x
  2. Step 2: Convert to fraction form
    81,659,178.80/122,488,768.20 = 51,426,090.80/x
  3. Step 3: Cross multiply
    81,659,178.80x = 122,488,768.20 × 51,426,090.80
  4. Step 4: Simplify right side
    81,659,178.80x = 6,299,118,515,433,352
  5. Step 5: Solve for x
    x = 6,299,118,515,433,352/81,659,178.80
  6. Step 6: Final answer
    x = 77,139,136.20

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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.