Home / 86,311.68-129,480.27-44,215.57

Finding the Fourth Proportional to 86,311.68, 129,480.27 and 44,215.57

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Solution

The fourth proportional to 86,311.68, 129,480.27 and 44,215.57 is: 66,329.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,311.68 : 129,480.27 = 44,215.57 : x
  2. Step 2: Convert to fraction form
    86,311.68/129,480.27 = 44,215.57/x
  3. Step 3: Cross multiply
    86,311.68x = 129,480.27 × 44,215.57
  4. Step 4: Simplify right side
    86,311.68x = 5,725,043,941.80
  5. Step 5: Solve for x
    x = 5,725,043,941.80/86,311.68
  6. Step 6: Final answer
    x = 66,329.89

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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.