Home / 83,603.76-125,402.24-21,275.84

Finding the Fourth Proportional to 83,603.76, 125,402.24 and 21,275.84

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Solution

The fourth proportional to 83,603.76, 125,402.24 and 21,275.84 is: 31,912.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,603.76 : 125,402.24 = 21,275.84 : x
  2. Step 2: Convert to fraction form
    83,603.76/125,402.24 = 21,275.84/x
  3. Step 3: Cross multiply
    83,603.76x = 125,402.24 × 21,275.84
  4. Step 4: Simplify right side
    83,603.76x = 2,668,037,993.88
  5. Step 5: Solve for x
    x = 2,668,037,993.88/83,603.76
  6. Step 6: Final answer
    x = 31,912.89

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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.