Home / 54,422.19-81,617.83-21,135.15

Finding the Fourth Proportional to 54,422.19, 81,617.83 and 21,135.15

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Solution

The fourth proportional to 54,422.19, 81,617.83 and 21,135.15 is: 31,696.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,422.19 : 81,617.83 = 21,135.15 : x
  2. Step 2: Convert to fraction form
    54,422.19/81,617.83 = 21,135.15/x
  3. Step 3: Cross multiply
    54,422.19x = 81,617.83 × 21,135.15
  4. Step 4: Simplify right side
    54,422.19x = 1,725,005,026.89
  5. Step 5: Solve for x
    x = 1,725,005,026.89/54,422.19
  6. Step 6: Final answer
    x = 31,696.72

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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.