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Finding the Fourth Proportional to 81,126.77, 121,679.90 and 24,966.66

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Solution

The fourth proportional to 81,126.77, 121,679.90 and 24,966.66 is: 37,446.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,126.77 : 121,679.90 = 24,966.66 : x
  2. Step 2: Convert to fraction form
    81,126.77/121,679.90 = 24,966.66/x
  3. Step 3: Cross multiply
    81,126.77x = 121,679.90 × 24,966.66
  4. Step 4: Simplify right side
    81,126.77x = 3,037,940,020.33
  5. Step 5: Solve for x
    x = 3,037,940,020.33/81,126.77
  6. Step 6: Final answer
    x = 37,446.83

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1.5x scale

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.