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Finding the Fourth Proportional to 89,775.29, 123,898.64 and 67,074.89

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Solution

The fourth proportional to 89,775.29, 123,898.64 and 67,074.89 is: 92,569.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,775.29 : 123,898.64 = 67,074.89 : x
  2. Step 2: Convert to fraction form
    89,775.29/123,898.64 = 67,074.89/x
  3. Step 3: Cross multiply
    89,775.29x = 123,898.64 × 67,074.89
  4. Step 4: Simplify right side
    89,775.29x = 8,310,486,882.93
  5. Step 5: Solve for x
    x = 8,310,486,882.93/89,775.29
  6. Step 6: Final answer
    x = 92,569.87

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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.