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Finding the Fourth Proportional to 78,432.95, 108,237.17 and 44,447.91

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Solution

The fourth proportional to 78,432.95, 108,237.17 and 44,447.91 is: 61,337.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,432.95 : 108,237.17 = 44,447.91 : x
  2. Step 2: Convert to fraction form
    78,432.95/108,237.17 = 44,447.91/x
  3. Step 3: Cross multiply
    78,432.95x = 108,237.17 × 44,447.91
  4. Step 4: Simplify right side
    78,432.95x = 4,810,915,768.58
  5. Step 5: Solve for x
    x = 4,810,915,768.58/78,432.95
  6. Step 6: Final answer
    x = 61,337.95

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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.