Home / 42,117.90-63,176.25-12,535.89

Finding the Fourth Proportional to 42,117.90, 63,176.25 and 12,535.89

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Solution

The fourth proportional to 42,117.90, 63,176.25 and 12,535.89 is: 18,803.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,117.90 : 63,176.25 = 12,535.89 : x
  2. Step 2: Convert to fraction form
    42,117.90/63,176.25 = 12,535.89/x
  3. Step 3: Cross multiply
    42,117.90x = 63,176.25 × 12,535.89
  4. Step 4: Simplify right side
    42,117.90x = 791,970,520.61
  5. Step 5: Solve for x
    x = 791,970,520.61/42,117.90
  6. Step 6: Final answer
    x = 18,803.66

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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.