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Finding the Fourth Proportional to 81,344.65, 121,988.39 and 24,401.57

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Solution

The fourth proportional to 81,344.65, 121,988.39 and 24,401.57 is: 36,593.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,344.65 : 121,988.39 = 24,401.57 : x
  2. Step 2: Convert to fraction form
    81,344.65/121,988.39 = 24,401.57/x
  3. Step 3: Cross multiply
    81,344.65x = 121,988.39 × 24,401.57
  4. Step 4: Simplify right side
    81,344.65x = 2,976,708,420.74
  5. Step 5: Solve for x
    x = 2,976,708,420.74/81,344.65
  6. Step 6: Final answer
    x = 36,593.78

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1.5x scale

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.