Home / 86,315.32-129,431.22-51,245.56

Finding the Fourth Proportional to 86,315.32, 129,431.22 and 51,245.56

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Solution

The fourth proportional to 86,315.32, 129,431.22 and 51,245.56 is: 76,843.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,315.32 : 129,431.22 = 51,245.56 : x
  2. Step 2: Convert to fraction form
    86,315.32/129,431.22 = 51,245.56/x
  3. Step 3: Cross multiply
    86,315.32x = 129,431.22 × 51,245.56
  4. Step 4: Simplify right side
    86,315.32x = 6,632,775,350.38
  5. Step 5: Solve for x
    x = 6,632,775,350.38/86,315.32
  6. Step 6: Final answer
    x = 76,843.55

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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.