Home / 87,806.85-131,710.61-21,246.87

Finding the Fourth Proportional to 87,806.85, 131,710.61 and 21,246.87

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Solution

The fourth proportional to 87,806.85, 131,710.61 and 21,246.87 is: 31,870.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,806.85 : 131,710.61 = 21,246.87 : x
  2. Step 2: Convert to fraction form
    87,806.85/131,710.61 = 21,246.87/x
  3. Step 3: Cross multiply
    87,806.85x = 131,710.61 × 21,246.87
  4. Step 4: Simplify right side
    87,806.85x = 2,798,438,208.29
  5. Step 5: Solve for x
    x = 2,798,438,208.29/87,806.85
  6. Step 6: Final answer
    x = 31,870.39

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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.