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Finding the Fourth Proportional to 78,371.52, 108,079.56 and 60,437.76

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Solution

The fourth proportional to 78,371.52, 108,079.56 and 60,437.76 is: 83,347.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,371.52 : 108,079.56 = 60,437.76 : x
  2. Step 2: Convert to fraction form
    78,371.52/108,079.56 = 60,437.76/x
  3. Step 3: Cross multiply
    78,371.52x = 108,079.56 × 60,437.76
  4. Step 4: Simplify right side
    78,371.52x = 6,532,086,508.19
  5. Step 5: Solve for x
    x = 6,532,086,508.19/78,371.52
  6. Step 6: Final answer
    x = 83,347.71

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1.5x scale

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.