Home / 54,328.40-81,419.70-38,727.80

Finding the Fourth Proportional to 54,328.40, 81,419.70 and 38,727.80

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Solution

The fourth proportional to 54,328.40, 81,419.70 and 38,727.80 is: 58,039.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,328.40 : 81,419.70 = 38,727.80 : x
  2. Step 2: Convert to fraction form
    54,328.40/81,419.70 = 38,727.80/x
  3. Step 3: Cross multiply
    54,328.40x = 81,419.70 × 38,727.80
  4. Step 4: Simplify right side
    54,328.40x = 3,153,205,857.66
  5. Step 5: Solve for x
    x = 3,153,205,857.66/54,328.40
  6. Step 6: Final answer
    x = 58,039.73

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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.