Home / 83,461.26-125,191.98-21,131.76

Finding the Fourth Proportional to 83,461.26, 125,191.98 and 21,131.76

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Solution

The fourth proportional to 83,461.26, 125,191.98 and 21,131.76 is: 31,697.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,461.26 : 125,191.98 = 21,131.76 : x
  2. Step 2: Convert to fraction form
    83,461.26/125,191.98 = 21,131.76/x
  3. Step 3: Cross multiply
    83,461.26x = 125,191.98 × 21,131.76
  4. Step 4: Simplify right side
    83,461.26x = 2,645,526,875.28
  5. Step 5: Solve for x
    x = 2,645,526,875.28/83,461.26
  6. Step 6: Final answer
    x = 31,697.66

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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.