Home / 54,085.30-74,621.40-31,419.88

Finding the Fourth Proportional to 54,085.30, 74,621.40 and 31,419.88

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Solution

The fourth proportional to 54,085.30, 74,621.40 and 31,419.88 is: 43,349.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,085.30 : 74,621.40 = 31,419.88 : x
  2. Step 2: Convert to fraction form
    54,085.30/74,621.40 = 31,419.88/x
  3. Step 3: Cross multiply
    54,085.30x = 74,621.40 × 31,419.88
  4. Step 4: Simplify right side
    54,085.30x = 2,344,595,433.43
  5. Step 5: Solve for x
    x = 2,344,595,433.43/54,085.30
  6. Step 6: Final answer
    x = 43,349.96

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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.