Home / 55,419.24-83,165.25-20,359.20

Finding the Fourth Proportional to 55,419.24, 83,165.25 and 20,359.20

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Solution

The fourth proportional to 55,419.24, 83,165.25 and 20,359.20 is: 30,552.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,419.24 : 83,165.25 = 20,359.20 : x
  2. Step 2: Convert to fraction form
    55,419.24/83,165.25 = 20,359.20/x
  3. Step 3: Cross multiply
    55,419.24x = 83,165.25 × 20,359.20
  4. Step 4: Simplify right side
    55,419.24x = 1,693,177,957.80
  5. Step 5: Solve for x
    x = 1,693,177,957.80/55,419.24
  6. Step 6: Final answer
    x = 30,552.17

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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.