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Finding the Fourth Proportional to 66,295.68, 99,443.52 and 54,584.32

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Solution

The fourth proportional to 66,295.68, 99,443.52 and 54,584.32 is: 81,876.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,295.68 : 99,443.52 = 54,584.32 : x
  2. Step 2: Convert to fraction form
    66,295.68/99,443.52 = 54,584.32/x
  3. Step 3: Cross multiply
    66,295.68x = 99,443.52 × 54,584.32
  4. Step 4: Simplify right side
    66,295.68x = 5,428,056,917.61
  5. Step 5: Solve for x
    x = 5,428,056,917.61/66,295.68
  6. Step 6: Final answer
    x = 81,876.48

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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.