Home / 71,143.92-98,179.20-39,318.12

Finding the Fourth Proportional to 71,143.92, 98,179.20 and 39,318.12

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Solution

The fourth proportional to 71,143.92, 98,179.20 and 39,318.12 is: 54,259.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,143.92 : 98,179.20 = 39,318.12 : x
  2. Step 2: Convert to fraction form
    71,143.92/98,179.20 = 39,318.12/x
  3. Step 3: Cross multiply
    71,143.92x = 98,179.20 × 39,318.12
  4. Step 4: Simplify right side
    71,143.92x = 3,860,221,567.10
  5. Step 5: Solve for x
    x = 3,860,221,567.10/71,143.92
  6. Step 6: Final answer
    x = 54,259.33

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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.