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Finding the Fourth Proportional to 78,892.43, 118,320.96 and 22,720.01

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Solution

The fourth proportional to 78,892.43, 118,320.96 and 22,720.01 is: 34,074.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,892.43 : 118,320.96 = 22,720.01 : x
  2. Step 2: Convert to fraction form
    78,892.43/118,320.96 = 22,720.01/x
  3. Step 3: Cross multiply
    78,892.43x = 118,320.96 × 22,720.01
  4. Step 4: Simplify right side
    78,892.43x = 2,688,253,394.41
  5. Step 5: Solve for x
    x = 2,688,253,394.41/78,892.43
  6. Step 6: Final answer
    x = 34,074.92

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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.