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Finding the Fourth Proportional to 41,138.40, 61,837.20 and 40,360.80

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Solution

The fourth proportional to 41,138.40, 61,837.20 and 40,360.80 is: 60,668.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,138.40 : 61,837.20 = 40,360.80 : x
  2. Step 2: Convert to fraction form
    41,138.40/61,837.20 = 40,360.80/x
  3. Step 3: Cross multiply
    41,138.40x = 61,837.20 × 40,360.80
  4. Step 4: Simplify right side
    41,138.40x = 2,495,798,861.76
  5. Step 5: Solve for x
    x = 2,495,798,861.76/41,138.40
  6. Step 6: Final answer
    x = 60,668.35

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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.