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Finding the Fourth Proportional to 117,615.38, 176,434.11 and 38,729.78

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Solution

The fourth proportional to 117,615.38, 176,434.11 and 38,729.78 is: 58,098.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,615.38 : 176,434.11 = 38,729.78 : x
  2. Step 2: Convert to fraction form
    117,615.38/176,434.11 = 38,729.78/x
  3. Step 3: Cross multiply
    117,615.38x = 176,434.11 × 38,729.78
  4. Step 4: Simplify right side
    117,615.38x = 6,833,254,264.80
  5. Step 5: Solve for x
    x = 6,833,254,264.80/117,615.38
  6. Step 6: Final answer
    x = 58,098.31

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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.