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Finding the Fourth Proportional to 89,471.76, 123,482.99 and 57,732.92

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Solution

The fourth proportional to 89,471.76, 123,482.99 and 57,732.92 is: 79,679.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,471.76 : 123,482.99 = 57,732.92 : x
  2. Step 2: Convert to fraction form
    89,471.76/123,482.99 = 57,732.92/x
  3. Step 3: Cross multiply
    89,471.76x = 123,482.99 × 57,732.92
  4. Step 4: Simplify right side
    89,471.76x = 7,129,033,583.03
  5. Step 5: Solve for x
    x = 7,129,033,583.03/89,471.76
  6. Step 6: Final answer
    x = 79,679.15

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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.