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Finding the Fourth Proportional to 71,565.39, 98,758.71 and 39,733.74

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Solution

The fourth proportional to 71,565.39, 98,758.71 and 39,733.74 is: 54,831.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,565.39 : 98,758.71 = 39,733.74 : x
  2. Step 2: Convert to fraction form
    71,565.39/98,758.71 = 39,733.74/x
  3. Step 3: Cross multiply
    71,565.39x = 98,758.71 × 39,733.74
  4. Step 4: Simplify right side
    71,565.39x = 3,924,052,905.88
  5. Step 5: Solve for x
    x = 3,924,052,905.88/71,565.39
  6. Step 6: Final answer
    x = 54,831.71

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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.