Home / 54,605.40-81,908.10-21,326.55

Finding the Fourth Proportional to 54,605.40, 81,908.10 and 21,326.55

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Solution

The fourth proportional to 54,605.40, 81,908.10 and 21,326.55 is: 31,989.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,605.40 : 81,908.10 = 21,326.55 : x
  2. Step 2: Convert to fraction form
    54,605.40/81,908.10 = 21,326.55/x
  3. Step 3: Cross multiply
    54,605.40x = 81,908.10 × 21,326.55
  4. Step 4: Simplify right side
    54,605.40x = 1,746,817,190.06
  5. Step 5: Solve for x
    x = 1,746,817,190.06/54,605.40
  6. Step 6: Final answer
    x = 31,989.83

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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.