Home / 72,864.26-109,287.27-20,277.84

Finding the Fourth Proportional to 72,864.26, 109,287.27 and 20,277.84

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Solution

The fourth proportional to 72,864.26, 109,287.27 and 20,277.84 is: 30,414.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,864.26 : 109,287.27 = 20,277.84 : x
  2. Step 2: Convert to fraction form
    72,864.26/109,287.27 = 20,277.84/x
  3. Step 3: Cross multiply
    72,864.26x = 109,287.27 × 20,277.84
  4. Step 4: Simplify right side
    72,864.26x = 2,216,109,775.10
  5. Step 5: Solve for x
    x = 2,216,109,775.10/72,864.26
  6. Step 6: Final answer
    x = 30,414.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.