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Finding the Fourth Proportional to 40,479.29, 60,719.31 and 15,513.39

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Solution

The fourth proportional to 40,479.29, 60,719.31 and 15,513.39 is: 23,270.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,479.29 : 60,719.31 = 15,513.39 : x
  2. Step 2: Convert to fraction form
    40,479.29/60,719.31 = 15,513.39/x
  3. Step 3: Cross multiply
    40,479.29x = 60,719.31 × 15,513.39
  4. Step 4: Simplify right side
    40,479.29x = 941,962,336.56
  5. Step 5: Solve for x
    x = 941,962,336.56/40,479.29
  6. Step 6: Final answer
    x = 23,270.23

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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.