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Finding the Fourth Proportional to 41,079.78, 61,327.89 and 39,621.78

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Solution

The fourth proportional to 41,079.78, 61,327.89 and 39,621.78 is: 59,151.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,079.78 : 61,327.89 = 39,621.78 : x
  2. Step 2: Convert to fraction form
    41,079.78/61,327.89 = 39,621.78/x
  3. Step 3: Cross multiply
    41,079.78x = 61,327.89 × 39,621.78
  4. Step 4: Simplify right side
    41,079.78x = 2,429,920,165.44
  5. Step 5: Solve for x
    x = 2,429,920,165.44/41,079.78
  6. Step 6: Final answer
    x = 59,151.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.