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Finding the Fourth Proportional to 54,605.92, 81,920.40 and 17,169.80

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Solution

The fourth proportional to 54,605.92, 81,920.40 and 17,169.80 is: 25,758.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,605.92 : 81,920.40 = 17,169.80 : x
  2. Step 2: Convert to fraction form
    54,605.92/81,920.40 = 17,169.80/x
  3. Step 3: Cross multiply
    54,605.92x = 81,920.40 × 17,169.80
  4. Step 4: Simplify right side
    54,605.92x = 1,406,556,883.92
  5. Step 5: Solve for x
    x = 1,406,556,883.92/54,605.92
  6. Step 6: Final answer
    x = 25,758.32

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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.