Home / 71,143.25-98,176.32-39,311.46

Finding the Fourth Proportional to 71,143.25, 98,176.32 and 39,311.46

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Solution

The fourth proportional to 71,143.25, 98,176.32 and 39,311.46 is: 54,249.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,143.25 : 98,176.32 = 39,311.46 : x
  2. Step 2: Convert to fraction form
    71,143.25/98,176.32 = 39,311.46/x
  3. Step 3: Cross multiply
    71,143.25x = 98,176.32 × 39,311.46
  4. Step 4: Simplify right side
    71,143.25x = 3,859,454,476.63
  5. Step 5: Solve for x
    x = 3,859,454,476.63/71,143.25
  6. Step 6: Final answer
    x = 54,249.06

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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.