Home / 81,394,727.20-122,092,090.80-30,266,166.40

Finding the Fourth Proportional to 81,394,727.20, 122,092,090.80 and 30,266,166.40

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Solution

The fourth proportional to 81,394,727.20, 122,092,090.80 and 30,266,166.40 is: 45,399,249.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,394,727.20 : 122,092,090.80 = 30,266,166.40 : x
  2. Step 2: Convert to fraction form
    81,394,727.20/122,092,090.80 = 30,266,166.40/x
  3. Step 3: Cross multiply
    81,394,727.20x = 122,092,090.80 × 30,266,166.40
  4. Step 4: Simplify right side
    81,394,727.20x = 3,695,259,536,276,709
  5. Step 5: Solve for x
    x = 3,695,259,536,276,709/81,394,727.20
  6. Step 6: Final answer
    x = 45,399,249.60

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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.