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Finding the Fourth Proportional to 54,246.20, 81,210.90 and 38,694.20

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Solution

The fourth proportional to 54,246.20, 81,210.90 and 38,694.20 is: 57,928.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,246.20 : 81,210.90 = 38,694.20 : x
  2. Step 2: Convert to fraction form
    54,246.20/81,210.90 = 38,694.20/x
  3. Step 3: Cross multiply
    54,246.20x = 81,210.90 × 38,694.20
  4. Step 4: Simplify right side
    54,246.20x = 3,142,390,806.78
  5. Step 5: Solve for x
    x = 3,142,390,806.78/54,246.20
  6. Step 6: Final answer
    x = 57,928.31

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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.