Home / 61,757.20-85,241.22-42,640.12

Finding the Fourth Proportional to 61,757.20, 85,241.22 and 42,640.12

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Solution

The fourth proportional to 61,757.20, 85,241.22 and 42,640.12 is: 58,854.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,757.20 : 85,241.22 = 42,640.12 : x
  2. Step 2: Convert to fraction form
    61,757.20/85,241.22 = 42,640.12/x
  3. Step 3: Cross multiply
    61,757.20x = 85,241.22 × 42,640.12
  4. Step 4: Simplify right side
    61,757.20x = 3,634,695,849.75
  5. Step 5: Solve for x
    x = 3,634,695,849.75/61,757.20
  6. Step 6: Final answer
    x = 58,854.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.