Home / 86,514.24-129,771.12-20,850.24

Finding the Fourth Proportional to 86,514.24, 129,771.12 and 20,850.24

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Solution

The fourth proportional to 86,514.24, 129,771.12 and 20,850.24 is: 31,275.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,514.24 : 129,771.12 = 20,850.24 : x
  2. Step 2: Convert to fraction form
    86,514.24/129,771.12 = 20,850.24/x
  3. Step 3: Cross multiply
    86,514.24x = 129,771.12 × 20,850.24
  4. Step 4: Simplify right side
    86,514.24x = 2,705,758,997.07
  5. Step 5: Solve for x
    x = 2,705,758,997.07/86,514.24
  6. Step 6: Final answer
    x = 31,275.30

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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.