Home / 86,640.76-129,885.18-41,639.59

Finding the Fourth Proportional to 86,640.76, 129,885.18 and 41,639.59

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Solution

The fourth proportional to 86,640.76, 129,885.18 and 41,639.59 is: 62,422.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,640.76 : 129,885.18 = 41,639.59 : x
  2. Step 2: Convert to fraction form
    86,640.76/129,885.18 = 41,639.59/x
  3. Step 3: Cross multiply
    86,640.76x = 129,885.18 × 41,639.59
  4. Step 4: Simplify right side
    86,640.76x = 5,408,365,642.28
  5. Step 5: Solve for x
    x = 5,408,365,642.28/86,640.76
  6. Step 6: Final answer
    x = 62,422.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.