Home / 87,865.26-131,798.33-21,305.40

Finding the Fourth Proportional to 87,865.26, 131,798.33 and 21,305.40

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Solution

The fourth proportional to 87,865.26, 131,798.33 and 21,305.40 is: 31,958.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,865.26 : 131,798.33 = 21,305.40 : x
  2. Step 2: Convert to fraction form
    87,865.26/131,798.33 = 21,305.40/x
  3. Step 3: Cross multiply
    87,865.26x = 131,798.33 × 21,305.40
  4. Step 4: Simplify right side
    87,865.26x = 2,808,016,139.98
  5. Step 5: Solve for x
    x = 2,808,016,139.98/87,865.26
  6. Step 6: Final answer
    x = 31,958.21

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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.