Home / 54,871.21-75,721.17-30,672.05

Finding the Fourth Proportional to 54,871.21, 75,721.17 and 30,672.05

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Solution

The fourth proportional to 54,871.21, 75,721.17 and 30,672.05 is: 42,326.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,871.21 : 75,721.17 = 30,672.05 : x
  2. Step 2: Convert to fraction form
    54,871.21/75,721.17 = 30,672.05/x
  3. Step 3: Cross multiply
    54,871.21x = 75,721.17 × 30,672.05
  4. Step 4: Simplify right side
    54,871.21x = 2,322,523,701.60
  5. Step 5: Solve for x
    x = 2,322,523,701.60/54,871.21
  6. Step 6: Final answer
    x = 42,326.82

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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.