Home / 54,178.68-74,772.78-30,311.40

Finding the Fourth Proportional to 54,178.68, 74,772.78 and 30,311.40

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Solution

The fourth proportional to 54,178.68, 74,772.78 and 30,311.40 is: 41,833.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,178.68 : 74,772.78 = 30,311.40 : x
  2. Step 2: Convert to fraction form
    54,178.68/74,772.78 = 30,311.40/x
  3. Step 3: Cross multiply
    54,178.68x = 74,772.78 × 30,311.40
  4. Step 4: Simplify right side
    54,178.68x = 2,266,467,643.69
  5. Step 5: Solve for x
    x = 2,266,467,643.69/54,178.68
  6. Step 6: Final answer
    x = 41,833.20

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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.