Home / 90,722.20-136,067.10-57,382.60

Finding the Fourth Proportional to 90,722.20, 136,067.10 and 57,382.60

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Solution

The fourth proportional to 90,722.20, 136,067.10 and 57,382.60 is: 86,063.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,722.20 : 136,067.10 = 57,382.60 : x
  2. Step 2: Convert to fraction form
    90,722.20/136,067.10 = 57,382.60/x
  3. Step 3: Cross multiply
    90,722.20x = 136,067.10 × 57,382.60
  4. Step 4: Simplify right side
    90,722.20x = 7,807,883,972.46
  5. Step 5: Solve for x
    x = 7,807,883,972.46/90,722.20
  6. Step 6: Final answer
    x = 86,063.65

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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.