Home / 86,239.26-129,359.46-30,079.16

Finding the Fourth Proportional to 86,239.26, 129,359.46 and 30,079.16

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Solution

The fourth proportional to 86,239.26, 129,359.46 and 30,079.16 is: 45,118.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,239.26 : 129,359.46 = 30,079.16 : x
  2. Step 2: Convert to fraction form
    86,239.26/129,359.46 = 30,079.16/x
  3. Step 3: Cross multiply
    86,239.26x = 129,359.46 × 30,079.16
  4. Step 4: Simplify right side
    86,239.26x = 3,891,023,894.85
  5. Step 5: Solve for x
    x = 3,891,023,894.85/86,239.26
  6. Step 6: Final answer
    x = 45,118.94

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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.