Home / 86,240.26-129,360.96-30,080.16

Finding the Fourth Proportional to 86,240.26, 129,360.96 and 30,080.16

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Solution

The fourth proportional to 86,240.26, 129,360.96 and 30,080.16 is: 45,120.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,240.26 : 129,360.96 = 30,080.16 : x
  2. Step 2: Convert to fraction form
    86,240.26/129,360.96 = 30,080.16/x
  3. Step 3: Cross multiply
    86,240.26x = 129,360.96 × 30,080.16
  4. Step 4: Simplify right side
    86,240.26x = 3,891,198,374.55
  5. Step 5: Solve for x
    x = 3,891,198,374.55/86,240.26
  6. Step 6: Final answer
    x = 45,120.44

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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.