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Finding the Fourth Proportional to 66,617.60, 99,959.04 and 27,201.92

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Solution

The fourth proportional to 66,617.60, 99,959.04 and 27,201.92 is: 40,816.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,617.60 : 99,959.04 = 27,201.92 : x
  2. Step 2: Convert to fraction form
    66,617.60/99,959.04 = 27,201.92/x
  3. Step 3: Cross multiply
    66,617.60x = 99,959.04 × 27,201.92
  4. Step 4: Simplify right side
    66,617.60x = 2,719,077,809.36
  5. Step 5: Solve for x
    x = 2,719,077,809.36/66,617.60
  6. Step 6: Final answer
    x = 40,816.21

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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.