Home / 71,149.28-98,186.04-39,318.18

Finding the Fourth Proportional to 71,149.28, 98,186.04 and 39,318.18

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Solution

The fourth proportional to 71,149.28, 98,186.04 and 39,318.18 is: 54,259.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,149.28 : 98,186.04 = 39,318.18 : x
  2. Step 2: Convert to fraction form
    71,149.28/98,186.04 = 39,318.18/x
  3. Step 3: Cross multiply
    71,149.28x = 98,186.04 × 39,318.18
  4. Step 4: Simplify right side
    71,149.28x = 3,860,496,394.21
  5. Step 5: Solve for x
    x = 3,860,496,394.21/71,149.28
  6. Step 6: Final answer
    x = 54,259.11

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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.