Home / 54,911.04-75,781.12-31,039.92

Finding the Fourth Proportional to 54,911.04, 75,781.12 and 31,039.92

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Solution

The fourth proportional to 54,911.04, 75,781.12 and 31,039.92 is: 42,837.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,911.04 : 75,781.12 = 31,039.92 : x
  2. Step 2: Convert to fraction form
    54,911.04/75,781.12 = 31,039.92/x
  3. Step 3: Cross multiply
    54,911.04x = 75,781.12 × 31,039.92
  4. Step 4: Simplify right side
    54,911.04x = 2,352,239,902.31
  5. Step 5: Solve for x
    x = 2,352,239,902.31/54,911.04
  6. Step 6: Final answer
    x = 42,837.29

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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.