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Finding the Fourth Proportional to 54,165.40, 81,215.70 and 27,921.40

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Solution

The fourth proportional to 54,165.40, 81,215.70 and 27,921.40 is: 41,865.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,165.40 : 81,215.70 = 27,921.40 : x
  2. Step 2: Convert to fraction form
    54,165.40/81,215.70 = 27,921.40/x
  3. Step 3: Cross multiply
    54,165.40x = 81,215.70 × 27,921.40
  4. Step 4: Simplify right side
    54,165.40x = 2,267,656,045.98
  5. Step 5: Solve for x
    x = 2,267,656,045.98/54,165.40
  6. Step 6: Final answer
    x = 41,865.40

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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.