Home / 67,478.28-101,186.10-39,406.65

Finding the Fourth Proportional to 67,478.28, 101,186.10 and 39,406.65

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Solution

The fourth proportional to 67,478.28, 101,186.10 and 39,406.65 is: 59,091.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,478.28 : 101,186.10 = 39,406.65 : x
  2. Step 2: Convert to fraction form
    67,478.28/101,186.10 = 39,406.65/x
  3. Step 3: Cross multiply
    67,478.28x = 101,186.10 × 39,406.65
  4. Step 4: Simplify right side
    67,478.28x = 3,987,405,227.57
  5. Step 5: Solve for x
    x = 3,987,405,227.57/67,478.28
  6. Step 6: Final answer
    x = 59,091.68

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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.