Home / 71,221.28-98,281.38-38,949.48

Finding the Fourth Proportional to 71,221.28, 98,281.38 and 38,949.48

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Solution

The fourth proportional to 71,221.28, 98,281.38 and 38,949.48 is: 53,748.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,221.28 : 98,281.38 = 38,949.48 : x
  2. Step 2: Convert to fraction form
    71,221.28/98,281.38 = 38,949.48/x
  3. Step 3: Cross multiply
    71,221.28x = 98,281.38 × 38,949.48
  4. Step 4: Simplify right side
    71,221.28x = 3,828,008,644.68
  5. Step 5: Solve for x
    x = 3,828,008,644.68/71,221.28
  6. Step 6: Final answer
    x = 53,748.10

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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.