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Finding the Fourth Proportional to 54,073.71, 81,110.57 and 20,787.57

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Solution

The fourth proportional to 54,073.71, 81,110.57 and 20,787.57 is: 31,181.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,073.71 : 81,110.57 = 20,787.57 : x
  2. Step 2: Convert to fraction form
    54,073.71/81,110.57 = 20,787.57/x
  3. Step 3: Cross multiply
    54,073.71x = 81,110.57 × 20,787.57
  4. Step 4: Simplify right side
    54,073.71x = 1,686,091,547.68
  5. Step 5: Solve for x
    x = 1,686,091,547.68/54,073.71
  6. Step 6: Final answer
    x = 31,181.36

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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.