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Finding the Fourth Proportional to 66,512.30, 99,847.42 and 52,482.40

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Solution

The fourth proportional to 66,512.30, 99,847.42 and 52,482.40 is: 78,785.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,512.30 : 99,847.42 = 52,482.40 : x
  2. Step 2: Convert to fraction form
    66,512.30/99,847.42 = 52,482.40/x
  3. Step 3: Cross multiply
    66,512.30x = 99,847.42 × 52,482.40
  4. Step 4: Simplify right side
    66,512.30x = 5,240,231,854.58
  5. Step 5: Solve for x
    x = 5,240,231,854.58/66,512.30
  6. Step 6: Final answer
    x = 78,785.91

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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.