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Finding the Fourth Proportional to 54,394.20, 81,605.70 and 19,330.20

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Solution

The fourth proportional to 54,394.20, 81,605.70 and 19,330.20 is: 29,000.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,394.20 : 81,605.70 = 19,330.20 : x
  2. Step 2: Convert to fraction form
    54,394.20/81,605.70 = 19,330.20/x
  3. Step 3: Cross multiply
    54,394.20x = 81,605.70 × 19,330.20
  4. Step 4: Simplify right side
    54,394.20x = 1,577,454,502.14
  5. Step 5: Solve for x
    x = 1,577,454,502.14/54,394.20
  6. Step 6: Final answer
    x = 29,000.42

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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.