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Finding the Fourth Proportional to 54,008.79, 81,026.25 and 20,275.11

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Solution

The fourth proportional to 54,008.79, 81,026.25 and 20,275.11 is: 30,417.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,008.79 : 81,026.25 = 20,275.11 : x
  2. Step 2: Convert to fraction form
    54,008.79/81,026.25 = 20,275.11/x
  3. Step 3: Cross multiply
    54,008.79x = 81,026.25 × 20,275.11
  4. Step 4: Simplify right side
    54,008.79x = 1,642,816,131.64
  5. Step 5: Solve for x
    x = 1,642,816,131.64/54,008.79
  6. Step 6: Final answer
    x = 30,417.57

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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.