Home / 54,789.60-82,116.24-28,478.88

Finding the Fourth Proportional to 54,789.60, 82,116.24 and 28,478.88

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Solution

The fourth proportional to 54,789.60, 82,116.24 and 28,478.88 is: 42,682.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,789.60 : 82,116.24 = 28,478.88 : x
  2. Step 2: Convert to fraction form
    54,789.60/82,116.24 = 28,478.88/x
  3. Step 3: Cross multiply
    54,789.60x = 82,116.24 × 28,478.88
  4. Step 4: Simplify right side
    54,789.60x = 2,338,578,545.01
  5. Step 5: Solve for x
    x = 2,338,578,545.01/54,789.60
  6. Step 6: Final answer
    x = 42,682.89

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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.