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Finding the Fourth Proportional to 54,288.20, 81,446.70 and 19,224.20

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Solution

The fourth proportional to 54,288.20, 81,446.70 and 19,224.20 is: 28,841.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,288.20 : 81,446.70 = 19,224.20 : x
  2. Step 2: Convert to fraction form
    54,288.20/81,446.70 = 19,224.20/x
  3. Step 3: Cross multiply
    54,288.20x = 81,446.70 × 19,224.20
  4. Step 4: Simplify right side
    54,288.20x = 1,565,747,650.14
  5. Step 5: Solve for x
    x = 1,565,747,650.14/54,288.20
  6. Step 6: Final answer
    x = 28,841.40

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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.