Home / 78,729.42-108,641.13-44,279.30

Finding the Fourth Proportional to 78,729.42, 108,641.13 and 44,279.30

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Solution

The fourth proportional to 78,729.42, 108,641.13 and 44,279.30 is: 61,102.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,729.42 : 108,641.13 = 44,279.30 : x
  2. Step 2: Convert to fraction form
    78,729.42/108,641.13 = 44,279.30/x
  3. Step 3: Cross multiply
    78,729.42x = 108,641.13 × 44,279.30
  4. Step 4: Simplify right side
    78,729.42x = 4,810,553,187.61
  5. Step 5: Solve for x
    x = 4,810,553,187.61/78,729.42
  6. Step 6: Final answer
    x = 61,102.36

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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.