Home / 82,428.78-123,501.92-55,360.38

Finding the Fourth Proportional to 82,428.78, 123,501.92 and 55,360.38

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Solution

The fourth proportional to 82,428.78, 123,501.92 and 55,360.38 is: 82,945.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,428.78 : 123,501.92 = 55,360.38 : x
  2. Step 2: Convert to fraction form
    82,428.78/123,501.92 = 55,360.38/x
  3. Step 3: Cross multiply
    82,428.78x = 123,501.92 × 55,360.38
  4. Step 4: Simplify right side
    82,428.78x = 6,837,113,221.93
  5. Step 5: Solve for x
    x = 6,837,113,221.93/82,428.78
  6. Step 6: Final answer
    x = 82,945.70

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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.