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Finding the Fourth Proportional to 63,060.91, 86,974.81 and 40,402

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Solution

The fourth proportional to 63,060.91, 86,974.81 and 40,402 is: 55,723.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,060.91 : 86,974.81 = 40,402 : x
  2. Step 2: Convert to fraction form
    63,060.91/86,974.81 = 40,402/x
  3. Step 3: Cross multiply
    63,060.91x = 86,974.81 × 40,402
  4. Step 4: Simplify right side
    63,060.91x = 3,513,956,273.62
  5. Step 5: Solve for x
    x = 3,513,956,273.62/63,060.91
  6. Step 6: Final answer
    x = 55,723.21

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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.