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Finding the Fourth Proportional to 54,391.57, 81,619.71 and 29,431.12

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Solution

The fourth proportional to 54,391.57, 81,619.71 and 29,431.12 is: 44,164.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,391.57 : 81,619.71 = 29,431.12 : x
  2. Step 2: Convert to fraction form
    54,391.57/81,619.71 = 29,431.12/x
  3. Step 3: Cross multiply
    54,391.57x = 81,619.71 × 29,431.12
  4. Step 4: Simplify right side
    54,391.57x = 2,402,159,479.38
  5. Step 5: Solve for x
    x = 2,402,159,479.38/54,391.57
  6. Step 6: Final answer
    x = 44,164.19

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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.