Home / 78,436.83-117,658.02-25,121.88

Finding the Fourth Proportional to 78,436.83, 117,658.02 and 25,121.88

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Solution

The fourth proportional to 78,436.83, 117,658.02 and 25,121.88 is: 37,683.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,436.83 : 117,658.02 = 25,121.88 : x
  2. Step 2: Convert to fraction form
    78,436.83/117,658.02 = 25,121.88/x
  3. Step 3: Cross multiply
    78,436.83x = 117,658.02 × 25,121.88
  4. Step 4: Simplify right side
    78,436.83x = 2,955,790,753.68
  5. Step 5: Solve for x
    x = 2,955,790,753.68/78,436.83
  6. Step 6: Final answer
    x = 37,683.71

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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.