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Finding the Fourth Proportional to 89,299.92, 123,231.84 and 57,468.80

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Solution

The fourth proportional to 89,299.92, 123,231.84 and 57,468.80 is: 79,305.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,299.92 : 123,231.84 = 57,468.80 : x
  2. Step 2: Convert to fraction form
    89,299.92/123,231.84 = 57,468.80/x
  3. Step 3: Cross multiply
    89,299.92x = 123,231.84 × 57,468.80
  4. Step 4: Simplify right side
    89,299.92x = 7,081,985,966.59
  5. Step 5: Solve for x
    x = 7,081,985,966.59/89,299.92
  6. Step 6: Final answer
    x = 79,305.62

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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.