Home / 83,487.16-115,217-49,515.76

Finding the Fourth Proportional to 83,487.16, 115,217 and 49,515.76

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Solution

The fourth proportional to 83,487.16, 115,217 and 49,515.76 is: 68,334.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,487.16 : 115,217 = 49,515.76 : x
  2. Step 2: Convert to fraction form
    83,487.16/115,217 = 49,515.76/x
  3. Step 3: Cross multiply
    83,487.16x = 115,217 × 49,515.76
  4. Step 4: Simplify right side
    83,487.16x = 5,705,057,319.92
  5. Step 5: Solve for x
    x = 5,705,057,319.92/83,487.16
  6. Step 6: Final answer
    x = 68,334.55

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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.