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Finding the Fourth Proportional to 40,404.80, 60,582.42 and 15,418.05

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Solution

The fourth proportional to 40,404.80, 60,582.42 and 15,418.05 is: 23,117.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,404.80 : 60,582.42 = 15,418.05 : x
  2. Step 2: Convert to fraction form
    40,404.80/60,582.42 = 15,418.05/x
  3. Step 3: Cross multiply
    40,404.80x = 60,582.42 × 15,418.05
  4. Step 4: Simplify right side
    40,404.80x = 934,062,780.68
  5. Step 5: Solve for x
    x = 934,062,780.68/40,404.80
  6. Step 6: Final answer
    x = 23,117.62

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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.