Home / 42,408.80-63,613.20-25,801.40

Finding the Fourth Proportional to 42,408.80, 63,613.20 and 25,801.40

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Solution

The fourth proportional to 42,408.80, 63,613.20 and 25,801.40 is: 38,702.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,408.80 : 63,613.20 = 25,801.40 : x
  2. Step 2: Convert to fraction form
    42,408.80/63,613.20 = 25,801.40/x
  3. Step 3: Cross multiply
    42,408.80x = 63,613.20 × 25,801.40
  4. Step 4: Simplify right side
    42,408.80x = 1,641,309,618.48
  5. Step 5: Solve for x
    x = 1,641,309,618.48/42,408.80
  6. Step 6: Final answer
    x = 38,702.10

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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.