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Finding the Fourth Proportional to 80,139.68, 110,555.52 and 51,854.48

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Solution

The fourth proportional to 80,139.68, 110,555.52 and 51,854.48 is: 71,535.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,139.68 : 110,555.52 = 51,854.48 : x
  2. Step 2: Convert to fraction form
    80,139.68/110,555.52 = 51,854.48/x
  3. Step 3: Cross multiply
    80,139.68x = 110,555.52 × 51,854.48
  4. Step 4: Simplify right side
    80,139.68x = 5,732,799,000.73
  5. Step 5: Solve for x
    x = 5,732,799,000.73/80,139.68
  6. Step 6: Final answer
    x = 71,535.09

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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.