Home / 86,367.91-129,525.72-30,197.55

Finding the Fourth Proportional to 86,367.91, 129,525.72 and 30,197.55

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Solution

The fourth proportional to 86,367.91, 129,525.72 and 30,197.55 is: 45,287.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,367.91 : 129,525.72 = 30,197.55 : x
  2. Step 2: Convert to fraction form
    86,367.91/129,525.72 = 30,197.55/x
  3. Step 3: Cross multiply
    86,367.91x = 129,525.72 × 30,197.55
  4. Step 4: Simplify right side
    86,367.91x = 3,911,359,292.75
  5. Step 5: Solve for x
    x = 3,911,359,292.75/86,367.91
  6. Step 6: Final answer
    x = 45,287.18

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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.