Home / 87,971.26-131,955.05-21,411.76

Finding the Fourth Proportional to 87,971.26, 131,955.05 and 21,411.76

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Solution

The fourth proportional to 87,971.26, 131,955.05 and 21,411.76 is: 32,117.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,971.26 : 131,955.05 = 21,411.76 : x
  2. Step 2: Convert to fraction form
    87,971.26/131,955.05 = 21,411.76/x
  3. Step 3: Cross multiply
    87,971.26x = 131,955.05 × 21,411.76
  4. Step 4: Simplify right side
    87,971.26x = 2,825,389,861.39
  5. Step 5: Solve for x
    x = 2,825,389,861.39/87,971.26
  6. Step 6: Final answer
    x = 32,117.19

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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.