Home / 83,607.72-125,408.28-21,279.84

Finding the Fourth Proportional to 83,607.72, 125,408.28 and 21,279.84

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Solution

The fourth proportional to 83,607.72, 125,408.28 and 21,279.84 is: 31,918.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,607.72 : 125,408.28 = 21,279.84 : x
  2. Step 2: Convert to fraction form
    83,607.72/125,408.28 = 21,279.84/x
  3. Step 3: Cross multiply
    83,607.72x = 125,408.28 × 21,279.84
  4. Step 4: Simplify right side
    83,607.72x = 2,668,668,133.08
  5. Step 5: Solve for x
    x = 2,668,668,133.08/83,607.72
  6. Step 6: Final answer
    x = 31,918.92

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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.