Home / 54,145.13-74,721.80-30,271.75

Finding the Fourth Proportional to 54,145.13, 74,721.80 and 30,271.75

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Solution

The fourth proportional to 54,145.13, 74,721.80 and 30,271.75 is: 41,775.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,145.13 : 74,721.80 = 30,271.75 : x
  2. Step 2: Convert to fraction form
    54,145.13/74,721.80 = 30,271.75/x
  3. Step 3: Cross multiply
    54,145.13x = 74,721.80 × 30,271.75
  4. Step 4: Simplify right side
    54,145.13x = 2,261,959,538.02
  5. Step 5: Solve for x
    x = 2,261,959,538.02/54,145.13
  6. Step 6: Final answer
    x = 41,775.87

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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.