Home / 54,750.20-82,125.30-31,357.40

Finding the Fourth Proportional to 54,750.20, 82,125.30 and 31,357.40

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Solution

The fourth proportional to 54,750.20, 82,125.30 and 31,357.40 is: 47,036.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,750.20 : 82,125.30 = 31,357.40 : x
  2. Step 2: Convert to fraction form
    54,750.20/82,125.30 = 31,357.40/x
  3. Step 3: Cross multiply
    54,750.20x = 82,125.30 × 31,357.40
  4. Step 4: Simplify right side
    54,750.20x = 2,575,235,882.22
  5. Step 5: Solve for x
    x = 2,575,235,882.22/54,750.20
  6. Step 6: Final answer
    x = 47,036.10

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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.