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Finding the Fourth Proportional to 63,781.86, 95,677.65 and 19,412.40

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Solution

The fourth proportional to 63,781.86, 95,677.65 and 19,412.40 is: 29,120.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,781.86 : 95,677.65 = 19,412.40 : x
  2. Step 2: Convert to fraction form
    63,781.86/95,677.65 = 19,412.40/x
  3. Step 3: Cross multiply
    63,781.86x = 95,677.65 × 19,412.40
  4. Step 4: Simplify right side
    63,781.86x = 1,857,332,812.86
  5. Step 5: Solve for x
    x = 1,857,332,812.86/63,781.86
  6. Step 6: Final answer
    x = 29,120.08

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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.