Home / 67,429.09-101,141.20-20,680.75

Finding the Fourth Proportional to 67,429.09, 101,141.20 and 20,680.75

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Solution

The fourth proportional to 67,429.09, 101,141.20 and 20,680.75 is: 31,020.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,429.09 : 101,141.20 = 20,680.75 : x
  2. Step 2: Convert to fraction form
    67,429.09/101,141.20 = 20,680.75/x
  3. Step 3: Cross multiply
    67,429.09x = 101,141.20 × 20,680.75
  4. Step 4: Simplify right side
    67,429.09x = 2,091,675,871.90
  5. Step 5: Solve for x
    x = 2,091,675,871.90/67,429.09
  6. Step 6: Final answer
    x = 31,020.38

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1.5x scale

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.