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Finding the Fourth Proportional to 66,475.80, 99,713.70 and 27,061.20

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Solution

The fourth proportional to 66,475.80, 99,713.70 and 27,061.20 is: 40,591.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,475.80 : 99,713.70 = 27,061.20 : x
  2. Step 2: Convert to fraction form
    66,475.80/99,713.70 = 27,061.20/x
  3. Step 3: Cross multiply
    66,475.80x = 99,713.70 × 27,061.20
  4. Step 4: Simplify right side
    66,475.80x = 2,698,372,378.44
  5. Step 5: Solve for x
    x = 2,698,372,378.44/66,475.80
  6. Step 6: Final answer
    x = 40,591.80

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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.