Home / 54,828.10-82,132.80-31,427.20

Finding the Fourth Proportional to 54,828.10, 82,132.80 and 31,427.20

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Solution

The fourth proportional to 54,828.10, 82,132.80 and 31,427.20 is: 47,078.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,828.10 : 82,132.80 = 31,427.20 : x
  2. Step 2: Convert to fraction form
    54,828.10/82,132.80 = 31,427.20/x
  3. Step 3: Cross multiply
    54,828.10x = 82,132.80 × 31,427.20
  4. Step 4: Simplify right side
    54,828.10x = 2,581,203,932.16
  5. Step 5: Solve for x
    x = 2,581,203,932.16/54,828.10
  6. Step 6: Final answer
    x = 47,078.12

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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.