Home / 87,977.40-131,964.24-21,417.90

Finding the Fourth Proportional to 87,977.40, 131,964.24 and 21,417.90

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Solution

The fourth proportional to 87,977.40, 131,964.24 and 21,417.90 is: 32,126.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,977.40 : 131,964.24 = 21,417.90 : x
  2. Step 2: Convert to fraction form
    87,977.40/131,964.24 = 21,417.90/x
  3. Step 3: Cross multiply
    87,977.40x = 131,964.24 × 21,417.90
  4. Step 4: Simplify right side
    87,977.40x = 2,826,396,895.90
  5. Step 5: Solve for x
    x = 2,826,396,895.90/87,977.40
  6. Step 6: Final answer
    x = 32,126.40

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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.