Home / 72,488.18-108,763.56-39,231.70

Finding the Fourth Proportional to 72,488.18, 108,763.56 and 39,231.70

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Solution

The fourth proportional to 72,488.18, 108,763.56 and 39,231.70 is: 58,864.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,488.18 : 108,763.56 = 39,231.70 : x
  2. Step 2: Convert to fraction form
    72,488.18/108,763.56 = 39,231.70/x
  3. Step 3: Cross multiply
    72,488.18x = 108,763.56 × 39,231.70
  4. Step 4: Simplify right side
    72,488.18x = 4,266,979,356.85
  5. Step 5: Solve for x
    x = 4,266,979,356.85/72,488.18
  6. Step 6: Final answer
    x = 58,864.48

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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.