Home / 80,934.04-111,094.76-71,781.45

Finding the Fourth Proportional to 80,934.04, 111,094.76 and 71,781.45

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Solution

The fourth proportional to 80,934.04, 111,094.76 and 71,781.45 is: 98,531.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,934.04 : 111,094.76 = 71,781.45 : x
  2. Step 2: Convert to fraction form
    80,934.04/111,094.76 = 71,781.45/x
  3. Step 3: Cross multiply
    80,934.04x = 111,094.76 × 71,781.45
  4. Step 4: Simplify right side
    80,934.04x = 7,974,542,960.20
  5. Step 5: Solve for x
    x = 7,974,542,960.20/80,934.04
  6. Step 6: Final answer
    x = 98,531.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.