Home / 67,512.20-101,282.70-20,769.80

Finding the Fourth Proportional to 67,512.20, 101,282.70 and 20,769.80

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Solution

The fourth proportional to 67,512.20, 101,282.70 and 20,769.80 is: 31,159.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,512.20 : 101,282.70 = 20,769.80 : x
  2. Step 2: Convert to fraction form
    67,512.20/101,282.70 = 20,769.80/x
  3. Step 3: Cross multiply
    67,512.20x = 101,282.70 × 20,769.80
  4. Step 4: Simplify right side
    67,512.20x = 2,103,621,422.46
  5. Step 5: Solve for x
    x = 2,103,621,422.46/67,512.20
  6. Step 6: Final answer
    x = 31,159.13

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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.