Home / 54,945.18-75,819.24-31,071.78

Finding the Fourth Proportional to 54,945.18, 75,819.24 and 31,071.78

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Solution

The fourth proportional to 54,945.18, 75,819.24 and 31,071.78 is: 42,876.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,945.18 : 75,819.24 = 31,071.78 : x
  2. Step 2: Convert to fraction form
    54,945.18/75,819.24 = 31,071.78/x
  3. Step 3: Cross multiply
    54,945.18x = 75,819.24 × 31,071.78
  4. Step 4: Simplify right side
    54,945.18x = 2,355,838,745.05
  5. Step 5: Solve for x
    x = 2,355,838,745.05/54,945.18
  6. Step 6: Final answer
    x = 42,876.17

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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.