Home / 54,431.16-81,640.56-18,885.93

Finding the Fourth Proportional to 54,431.16, 81,640.56 and 18,885.93

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Solution

The fourth proportional to 54,431.16, 81,640.56 and 18,885.93 is: 28,326.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,431.16 : 81,640.56 = 18,885.93 : x
  2. Step 2: Convert to fraction form
    54,431.16/81,640.56 = 18,885.93/x
  3. Step 3: Cross multiply
    54,431.16x = 81,640.56 × 18,885.93
  4. Step 4: Simplify right side
    54,431.16x = 1,541,857,901.32
  5. Step 5: Solve for x
    x = 1,541,857,901.32/54,431.16
  6. Step 6: Final answer
    x = 28,326.75

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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.