Home / 54,748.20-82,122.30-31,355.40

Finding the Fourth Proportional to 54,748.20, 82,122.30 and 31,355.40

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Solution

The fourth proportional to 54,748.20, 82,122.30 and 31,355.40 is: 47,033.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,748.20 : 82,122.30 = 31,355.40 : x
  2. Step 2: Convert to fraction form
    54,748.20/82,122.30 = 31,355.40/x
  3. Step 3: Cross multiply
    54,748.20x = 82,122.30 × 31,355.40
  4. Step 4: Simplify right side
    54,748.20x = 2,574,977,565.42
  5. Step 5: Solve for x
    x = 2,574,977,565.42/54,748.20
  6. Step 6: Final answer
    x = 47,033.10

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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.