Home / 72,731,115.12-100,371,349.08-39,693,172.08

Finding the Fourth Proportional to 72,731,115.12, 100,371,349.08 and 39,693,172.08

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Solution

The fourth proportional to 72,731,115.12, 100,371,349.08 and 39,693,172.08 is: 54,777,892.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,731,115.12 : 100,371,349.08 = 39,693,172.08 : x
  2. Step 2: Convert to fraction form
    72,731,115.12/100,371,349.08 = 39,693,172.08/x
  3. Step 3: Cross multiply
    72,731,115.12x = 100,371,349.08 × 39,693,172.08
  4. Step 4: Simplify right side
    72,731,115.12x = 3,984,057,230,934,189.50
  5. Step 5: Solve for x
    x = 3,984,057,230,934,189.50/72,731,115.12
  6. Step 6: Final answer
    x = 54,777,892.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.