Home / 85,067.15-127,679.57-42,976.85

Finding the Fourth Proportional to 85,067.15, 127,679.57 and 42,976.85

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Solution

The fourth proportional to 85,067.15, 127,679.57 and 42,976.85 is: 64,505.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,067.15 : 127,679.57 = 42,976.85 : x
  2. Step 2: Convert to fraction form
    85,067.15/127,679.57 = 42,976.85/x
  3. Step 3: Cross multiply
    85,067.15x = 127,679.57 × 42,976.85
  4. Step 4: Simplify right side
    85,067.15x = 5,487,264,874.67
  5. Step 5: Solve for x
    x = 5,487,264,874.67/85,067.15
  6. Step 6: Final answer
    x = 64,505.10

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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.