Home / 54,142.20-81,213.30-39,281.40

Finding the Fourth Proportional to 54,142.20, 81,213.30 and 39,281.40

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Solution

The fourth proportional to 54,142.20, 81,213.30 and 39,281.40 is: 58,922.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,142.20 : 81,213.30 = 39,281.40 : x
  2. Step 2: Convert to fraction form
    54,142.20/81,213.30 = 39,281.40/x
  3. Step 3: Cross multiply
    54,142.20x = 81,213.30 × 39,281.40
  4. Step 4: Simplify right side
    54,142.20x = 3,190,172,122.62
  5. Step 5: Solve for x
    x = 3,190,172,122.62/54,142.20
  6. Step 6: Final answer
    x = 58,922.10

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1.5x scale

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.