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Finding the Fourth Proportional to 90,612.56, 125,046.12 and 52,879.44

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Solution

The fourth proportional to 90,612.56, 125,046.12 and 52,879.44 is: 72,974.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,612.56 : 125,046.12 = 52,879.44 : x
  2. Step 2: Convert to fraction form
    90,612.56/125,046.12 = 52,879.44/x
  3. Step 3: Cross multiply
    90,612.56x = 125,046.12 × 52,879.44
  4. Step 4: Simplify right side
    90,612.56x = 6,612,368,799.77
  5. Step 5: Solve for x
    x = 6,612,368,799.77/90,612.56
  6. Step 6: Final answer
    x = 72,974.09

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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.