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Finding the Fourth Proportional to 54,810.30, 82,215.45 and 21,519.30

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Solution

The fourth proportional to 54,810.30, 82,215.45 and 21,519.30 is: 32,278.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,810.30 : 82,215.45 = 21,519.30 : x
  2. Step 2: Convert to fraction form
    54,810.30/82,215.45 = 21,519.30/x
  3. Step 3: Cross multiply
    54,810.30x = 82,215.45 × 21,519.30
  4. Step 4: Simplify right side
    54,810.30x = 1,769,218,933.19
  5. Step 5: Solve for x
    x = 1,769,218,933.19/54,810.30
  6. Step 6: Final answer
    x = 32,278.95

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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.