Home / 42,545.85-63,721.65-20,374.89

Finding the Fourth Proportional to 42,545.85, 63,721.65 and 20,374.89

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Solution

The fourth proportional to 42,545.85, 63,721.65 and 20,374.89 is: 30,515.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,545.85 : 63,721.65 = 20,374.89 : x
  2. Step 2: Convert to fraction form
    42,545.85/63,721.65 = 20,374.89/x
  3. Step 3: Cross multiply
    42,545.85x = 63,721.65 × 20,374.89
  4. Step 4: Simplify right side
    42,545.85x = 1,298,321,609.37
  5. Step 5: Solve for x
    x = 1,298,321,609.37/42,545.85
  6. Step 6: Final answer
    x = 30,515.82

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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.