Home / 83,489.12-115,213.68-45,247.76

Finding the Fourth Proportional to 83,489.12, 115,213.68 and 45,247.76

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Solution

The fourth proportional to 83,489.12, 115,213.68 and 45,247.76 is: 62,441.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,489.12 : 115,213.68 = 45,247.76 : x
  2. Step 2: Convert to fraction form
    83,489.12/115,213.68 = 45,247.76/x
  3. Step 3: Cross multiply
    83,489.12x = 115,213.68 × 45,247.76
  4. Step 4: Simplify right side
    83,489.12x = 5,213,160,941.36
  5. Step 5: Solve for x
    x = 5,213,160,941.36/83,489.12
  6. Step 6: Final answer
    x = 62,441.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.