Home / 54,217.25-81,374.48-45,387.84

Finding the Fourth Proportional to 54,217.25, 81,374.48 and 45,387.84

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Solution

The fourth proportional to 54,217.25, 81,374.48 and 45,387.84 is: 68,122.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,217.25 : 81,374.48 = 45,387.84 : x
  2. Step 2: Convert to fraction form
    54,217.25/81,374.48 = 45,387.84/x
  3. Step 3: Cross multiply
    54,217.25x = 81,374.48 × 45,387.84
  4. Step 4: Simplify right side
    54,217.25x = 3,693,411,651.38
  5. Step 5: Solve for x
    x = 3,693,411,651.38/54,217.25
  6. Step 6: Final answer
    x = 68,122.45

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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.