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Finding the Fourth Proportional to 66,577.80, 99,160.26 and 66,255.87

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Solution

The fourth proportional to 66,577.80, 99,160.26 and 66,255.87 is: 98,680.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,577.80 : 99,160.26 = 66,255.87 : x
  2. Step 2: Convert to fraction form
    66,577.80/99,160.26 = 66,255.87/x
  3. Step 3: Cross multiply
    66,577.80x = 99,160.26 × 66,255.87
  4. Step 4: Simplify right side
    66,577.80x = 6,569,949,295.73
  5. Step 5: Solve for x
    x = 6,569,949,295.73/66,577.80
  6. Step 6: Final answer
    x = 98,680.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.