Home / 86,100.20-129,344.72-51,062.84

Finding the Fourth Proportional to 86,100.20, 129,344.72 and 51,062.84

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Solution

The fourth proportional to 86,100.20, 129,344.72 and 51,062.84 is: 76,709.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,100.20 : 129,344.72 = 51,062.84 : x
  2. Step 2: Convert to fraction form
    86,100.20/129,344.72 = 51,062.84/x
  3. Step 3: Cross multiply
    86,100.20x = 129,344.72 × 51,062.84
  4. Step 4: Simplify right side
    86,100.20x = 6,604,708,742.20
  5. Step 5: Solve for x
    x = 6,604,708,742.20/86,100.20
  6. Step 6: Final answer
    x = 76,709.56

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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.