Home / 71,614.42-98,819.58-39,778.18

Finding the Fourth Proportional to 71,614.42, 98,819.58 and 39,778.18

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Solution

The fourth proportional to 71,614.42, 98,819.58 and 39,778.18 is: 54,889.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,614.42 : 98,819.58 = 39,778.18 : x
  2. Step 2: Convert to fraction form
    71,614.42/98,819.58 = 39,778.18/x
  3. Step 3: Cross multiply
    71,614.42x = 98,819.58 × 39,778.18
  4. Step 4: Simplify right side
    71,614.42x = 3,930,863,040.76
  5. Step 5: Solve for x
    x = 3,930,863,040.76/71,614.42
  6. Step 6: Final answer
    x = 54,889.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.