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Finding the Fourth Proportional to 88,508, 122,146.08 and 66,665.12

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Solution

The fourth proportional to 88,508, 122,146.08 and 66,665.12 is: 92,001.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,508 : 122,146.08 = 66,665.12 : x
  2. Step 2: Convert to fraction form
    88,508/122,146.08 = 66,665.12/x
  3. Step 3: Cross multiply
    88,508x = 122,146.08 × 66,665.12
  4. Step 4: Simplify right side
    88,508x = 8,142,883,080.73
  5. Step 5: Solve for x
    x = 8,142,883,080.73/88,508
  6. Step 6: Final answer
    x = 92,001.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.