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Finding the Fourth Proportional to 81,562.88, 112,555.92 and 49,729.76

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Solution

The fourth proportional to 81,562.88, 112,555.92 and 49,729.76 is: 68,626.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,562.88 : 112,555.92 = 49,729.76 : x
  2. Step 2: Convert to fraction form
    81,562.88/112,555.92 = 49,729.76/x
  3. Step 3: Cross multiply
    81,562.88x = 112,555.92 × 49,729.76
  4. Step 4: Simplify right side
    81,562.88x = 5,597,378,888.18
  5. Step 5: Solve for x
    x = 5,597,378,888.18/81,562.88
  6. Step 6: Final answer
    x = 68,626.55

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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.