Home / 77,555.28-116,311.62-21,382.20

Finding the Fourth Proportional to 77,555.28, 116,311.62 and 21,382.20

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Solution

The fourth proportional to 77,555.28, 116,311.62 and 21,382.20 is: 32,067.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,555.28 : 116,311.62 = 21,382.20 : x
  2. Step 2: Convert to fraction form
    77,555.28/116,311.62 = 21,382.20/x
  3. Step 3: Cross multiply
    77,555.28x = 116,311.62 × 21,382.20
  4. Step 4: Simplify right side
    77,555.28x = 2,486,998,321.16
  5. Step 5: Solve for x
    x = 2,486,998,321.16/77,555.28
  6. Step 6: Final answer
    x = 32,067.43

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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.