Home / 71,272.24-98,354.72-39,439.20

Finding the Fourth Proportional to 71,272.24, 98,354.72 and 39,439.20

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Solution

The fourth proportional to 71,272.24, 98,354.72 and 39,439.20 is: 54,425.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,272.24 : 98,354.72 = 39,439.20 : x
  2. Step 2: Convert to fraction form
    71,272.24/98,354.72 = 39,439.20/x
  3. Step 3: Cross multiply
    71,272.24x = 98,354.72 × 39,439.20
  4. Step 4: Simplify right side
    71,272.24x = 3,879,031,473.02
  5. Step 5: Solve for x
    x = 3,879,031,473.02/71,272.24
  6. Step 6: Final answer
    x = 54,425.56

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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.