Home / 52,143.57-78,221.90-25,490.43

Finding the Fourth Proportional to 52,143.57, 78,221.90 and 25,490.43

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Solution

The fourth proportional to 52,143.57, 78,221.90 and 25,490.43 is: 38,238.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,143.57 : 78,221.90 = 25,490.43 : x
  2. Step 2: Convert to fraction form
    52,143.57/78,221.90 = 25,490.43/x
  3. Step 3: Cross multiply
    52,143.57x = 78,221.90 × 25,490.43
  4. Step 4: Simplify right side
    52,143.57x = 1,993,909,930.14
  5. Step 5: Solve for x
    x = 1,993,909,930.14/52,143.57
  6. Step 6: Final answer
    x = 38,238.85

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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.