Home / 54,330.26-81,479.57-21,042.90

Finding the Fourth Proportional to 54,330.26, 81,479.57 and 21,042.90

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Solution

The fourth proportional to 54,330.26, 81,479.57 and 21,042.90 is: 31,558.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,330.26 : 81,479.57 = 21,042.90 : x
  2. Step 2: Convert to fraction form
    54,330.26/81,479.57 = 21,042.90/x
  3. Step 3: Cross multiply
    54,330.26x = 81,479.57 × 21,042.90
  4. Step 4: Simplify right side
    54,330.26x = 1,714,566,338.34
  5. Step 5: Solve for x
    x = 1,714,566,338.34/54,330.26
  6. Step 6: Final answer
    x = 31,558.22

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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.