Home / 80,981.16-121,471.76-43,489.66

Finding the Fourth Proportional to 80,981.16, 121,471.76 and 43,489.66

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Solution

The fourth proportional to 80,981.16, 121,471.76 and 43,489.66 is: 65,234.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,981.16 : 121,471.76 = 43,489.66 : x
  2. Step 2: Convert to fraction form
    80,981.16/121,471.76 = 43,489.66/x
  3. Step 3: Cross multiply
    80,981.16x = 121,471.76 × 43,489.66
  4. Step 4: Simplify right side
    80,981.16x = 5,282,765,542.00
  5. Step 5: Solve for x
    x = 5,282,765,542.00/80,981.16
  6. Step 6: Final answer
    x = 65,234.50

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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.