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Finding the Fourth Proportional to 68,155.47, 102,150.32 and 36,487.71

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Solution

The fourth proportional to 68,155.47, 102,150.32 and 36,487.71 is: 54,687.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,155.47 : 102,150.32 = 36,487.71 : x
  2. Step 2: Convert to fraction form
    68,155.47/102,150.32 = 36,487.71/x
  3. Step 3: Cross multiply
    68,155.47x = 102,150.32 × 36,487.71
  4. Step 4: Simplify right side
    68,155.47x = 3,727,231,070.13
  5. Step 5: Solve for x
    x = 3,727,231,070.13/68,155.47
  6. Step 6: Final answer
    x = 54,687.19

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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.