Home / 86,582.20-129,871.94-71,759.84

Finding the Fourth Proportional to 86,582.20, 129,871.94 and 71,759.84

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Solution

The fourth proportional to 86,582.20, 129,871.94 and 71,759.84 is: 107,638.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,582.20 : 129,871.94 = 71,759.84 : x
  2. Step 2: Convert to fraction form
    86,582.20/129,871.94 = 71,759.84/x
  3. Step 3: Cross multiply
    86,582.20x = 129,871.94 × 71,759.84
  4. Step 4: Simplify right side
    86,582.20x = 9,319,589,634.89
  5. Step 5: Solve for x
    x = 9,319,589,634.89/86,582.20
  6. Step 6: Final answer
    x = 107,638.63

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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.