Home / 86,449.76-129,450.32-74,049.36

Finding the Fourth Proportional to 86,449.76, 129,450.32 and 74,049.36

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Solution

The fourth proportional to 86,449.76, 129,450.32 and 74,049.36 is: 110,881.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,449.76 : 129,450.32 = 74,049.36 : x
  2. Step 2: Convert to fraction form
    86,449.76/129,450.32 = 74,049.36/x
  3. Step 3: Cross multiply
    86,449.76x = 129,450.32 × 74,049.36
  4. Step 4: Simplify right side
    86,449.76x = 9,585,713,347.80
  5. Step 5: Solve for x
    x = 9,585,713,347.80/86,449.76
  6. Step 6: Final answer
    x = 110,881.90

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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.