Home / 85,691.32-118,253.20-49,379.42

Finding the Fourth Proportional to 85,691.32, 118,253.20 and 49,379.42

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Solution

The fourth proportional to 85,691.32, 118,253.20 and 49,379.42 is: 68,143.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,691.32 : 118,253.20 = 49,379.42 : x
  2. Step 2: Convert to fraction form
    85,691.32/118,253.20 = 49,379.42/x
  3. Step 3: Cross multiply
    85,691.32x = 118,253.20 × 49,379.42
  4. Step 4: Simplify right side
    85,691.32x = 5,839,274,182.25
  5. Step 5: Solve for x
    x = 5,839,274,182.25/85,691.32
  6. Step 6: Final answer
    x = 68,143.13

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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.