Home / 54,561.39-81,809.14-21,275.07

Finding the Fourth Proportional to 54,561.39, 81,809.14 and 21,275.07

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Solution

The fourth proportional to 54,561.39, 81,809.14 and 21,275.07 is: 31,899.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,561.39 : 81,809.14 = 21,275.07 : x
  2. Step 2: Convert to fraction form
    54,561.39/81,809.14 = 21,275.07/x
  3. Step 3: Cross multiply
    54,561.39x = 81,809.14 × 21,275.07
  4. Step 4: Simplify right side
    54,561.39x = 1,740,495,180.14
  5. Step 5: Solve for x
    x = 1,740,495,180.14/54,561.39
  6. Step 6: Final answer
    x = 31,899.76

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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.