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Finding the Fourth Proportional to 89,663.95, 134,234.70 and 69,882.13

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Solution

The fourth proportional to 89,663.95, 134,234.70 and 69,882.13 is: 104,619.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,663.95 : 134,234.70 = 69,882.13 : x
  2. Step 2: Convert to fraction form
    89,663.95/134,234.70 = 69,882.13/x
  3. Step 3: Cross multiply
    89,663.95x = 134,234.70 × 69,882.13
  4. Step 4: Simplify right side
    89,663.95x = 9,380,606,755.91
  5. Step 5: Solve for x
    x = 9,380,606,755.91/89,663.95
  6. Step 6: Final answer
    x = 104,619.60

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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.