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Finding the Fourth Proportional to 79,304.92, 118,760.52 and 66,215.32

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Solution

The fourth proportional to 79,304.92, 118,760.52 and 66,215.32 is: 99,158.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,304.92 : 118,760.52 = 66,215.32 : x
  2. Step 2: Convert to fraction form
    79,304.92/118,760.52 = 66,215.32/x
  3. Step 3: Cross multiply
    79,304.92x = 118,760.52 × 66,215.32
  4. Step 4: Simplify right side
    79,304.92x = 7,863,765,835.17
  5. Step 5: Solve for x
    x = 7,863,765,835.17/79,304.92
  6. Step 6: Final answer
    x = 99,158.61

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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.