Home / 86,043.20-129,055.12-29,872.96

Finding the Fourth Proportional to 86,043.20, 129,055.12 and 29,872.96

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Solution

The fourth proportional to 86,043.20, 129,055.12 and 29,872.96 is: 44,806.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,043.20 : 129,055.12 = 29,872.96 : x
  2. Step 2: Convert to fraction form
    86,043.20/129,055.12 = 29,872.96/x
  3. Step 3: Cross multiply
    86,043.20x = 129,055.12 × 29,872.96
  4. Step 4: Simplify right side
    86,043.20x = 3,855,258,437.56
  5. Step 5: Solve for x
    x = 3,855,258,437.56/86,043.20
  6. Step 6: Final answer
    x = 44,806.08

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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.