Home / 81,449.24-112,333.31-57,330.05

Finding the Fourth Proportional to 81,449.24, 112,333.31 and 57,330.05

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Solution

The fourth proportional to 81,449.24, 112,333.31 and 57,330.05 is: 79,068.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,449.24 : 112,333.31 = 57,330.05 : x
  2. Step 2: Convert to fraction form
    81,449.24/112,333.31 = 57,330.05/x
  3. Step 3: Cross multiply
    81,449.24x = 112,333.31 × 57,330.05
  4. Step 4: Simplify right side
    81,449.24x = 6,440,073,645.64
  5. Step 5: Solve for x
    x = 6,440,073,645.64/81,449.24
  6. Step 6: Final answer
    x = 79,068.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.