Home / 80,981.61-111,754.79-45,170.70

Finding the Fourth Proportional to 80,981.61, 111,754.79 and 45,170.70

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Solution

The fourth proportional to 80,981.61, 111,754.79 and 45,170.70 is: 62,335.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,981.61 : 111,754.79 = 45,170.70 : x
  2. Step 2: Convert to fraction form
    80,981.61/111,754.79 = 45,170.70/x
  3. Step 3: Cross multiply
    80,981.61x = 111,754.79 × 45,170.70
  4. Step 4: Simplify right side
    80,981.61x = 5,048,042,092.65
  5. Step 5: Solve for x
    x = 5,048,042,092.65/80,981.61
  6. Step 6: Final answer
    x = 62,335.66

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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.