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Finding the Fourth Proportional to 73,519.80, 110,279.70 and 38,470.20

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Solution

The fourth proportional to 73,519.80, 110,279.70 and 38,470.20 is: 57,705.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,519.80 : 110,279.70 = 38,470.20 : x
  2. Step 2: Convert to fraction form
    73,519.80/110,279.70 = 38,470.20/x
  3. Step 3: Cross multiply
    73,519.80x = 110,279.70 × 38,470.20
  4. Step 4: Simplify right side
    73,519.80x = 4,242,482,114.94
  5. Step 5: Solve for x
    x = 4,242,482,114.94/73,519.80
  6. Step 6: Final answer
    x = 57,705.30

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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.