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Finding the Fourth Proportional to 89,709.92, 123,799.10 and 49,422.76

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Solution

The fourth proportional to 89,709.92, 123,799.10 and 49,422.76 is: 68,203.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,709.92 : 123,799.10 = 49,422.76 : x
  2. Step 2: Convert to fraction form
    89,709.92/123,799.10 = 49,422.76/x
  3. Step 3: Cross multiply
    89,709.92x = 123,799.10 × 49,422.76
  4. Step 4: Simplify right side
    89,709.92x = 6,118,493,207.52
  5. Step 5: Solve for x
    x = 6,118,493,207.52/89,709.92
  6. Step 6: Final answer
    x = 68,203.08

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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.