Home / 81,431.43-112,387.25-45,623.87

Finding the Fourth Proportional to 81,431.43, 112,387.25 and 45,623.87

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Solution

The fourth proportional to 81,431.43, 112,387.25 and 45,623.87 is: 62,967.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,431.43 : 112,387.25 = 45,623.87 : x
  2. Step 2: Convert to fraction form
    81,431.43/112,387.25 = 45,623.87/x
  3. Step 3: Cross multiply
    81,431.43x = 112,387.25 × 45,623.87
  4. Step 4: Simplify right side
    81,431.43x = 5,127,541,283.66
  5. Step 5: Solve for x
    x = 5,127,541,283.66/81,431.43
  6. Step 6: Final answer
    x = 62,967.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.