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Finding the Fourth Proportional to 40,489.95, 60,716.70 and 15,521.70

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Solution

The fourth proportional to 40,489.95, 60,716.70 and 15,521.70 is: 23,275.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,489.95 : 60,716.70 = 15,521.70 : x
  2. Step 2: Convert to fraction form
    40,489.95/60,716.70 = 15,521.70/x
  3. Step 3: Cross multiply
    40,489.95x = 60,716.70 × 15,521.70
  4. Step 4: Simplify right side
    40,489.95x = 942,426,402.39
  5. Step 5: Solve for x
    x = 942,426,402.39/40,489.95
  6. Step 6: Final answer
    x = 23,275.56

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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.