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Finding the Fourth Proportional to 89,760.73, 123,988.13 and 67,060.28

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Solution

The fourth proportional to 89,760.73, 123,988.13 and 67,060.28 is: 92,631.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,760.73 : 123,988.13 = 67,060.28 : x
  2. Step 2: Convert to fraction form
    89,760.73/123,988.13 = 67,060.28/x
  3. Step 3: Cross multiply
    89,760.73x = 123,988.13 × 67,060.28
  4. Step 4: Simplify right side
    89,760.73x = 8,314,678,714.48
  5. Step 5: Solve for x
    x = 8,314,678,714.48/89,760.73
  6. Step 6: Final answer
    x = 92,631.59

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1.5x scale

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.