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Finding the Fourth Proportional to 78,375.61, 117,460.68 and 36,250.30

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Solution

The fourth proportional to 78,375.61, 117,460.68 and 36,250.30 is: 54,327.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,375.61 : 117,460.68 = 36,250.30 : x
  2. Step 2: Convert to fraction form
    78,375.61/117,460.68 = 36,250.30/x
  3. Step 3: Cross multiply
    78,375.61x = 117,460.68 × 36,250.30
  4. Step 4: Simplify right side
    78,375.61x = 4,257,984,888.20
  5. Step 5: Solve for x
    x = 4,257,984,888.20/78,375.61
  6. Step 6: Final answer
    x = 54,327.93

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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.