Home / 71,512.32-98,685.36-39,680.76

Finding the Fourth Proportional to 71,512.32, 98,685.36 and 39,680.76

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Solution

The fourth proportional to 71,512.32, 98,685.36 and 39,680.76 is: 54,758.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,512.32 : 98,685.36 = 39,680.76 : x
  2. Step 2: Convert to fraction form
    71,512.32/98,685.36 = 39,680.76/x
  3. Step 3: Cross multiply
    71,512.32x = 98,685.36 × 39,680.76
  4. Step 4: Simplify right side
    71,512.32x = 3,915,910,085.67
  5. Step 5: Solve for x
    x = 3,915,910,085.67/71,512.32
  6. Step 6: Final answer
    x = 54,758.54

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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.