Home / 82,378.89-123,569.01-53,939.82

Finding the Fourth Proportional to 82,378.89, 123,569.01 and 53,939.82

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Solution

The fourth proportional to 82,378.89, 123,569.01 and 53,939.82 is: 80,910.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,378.89 : 123,569.01 = 53,939.82 : x
  2. Step 2: Convert to fraction form
    82,378.89/123,569.01 = 53,939.82/x
  3. Step 3: Cross multiply
    82,378.89x = 123,569.01 × 53,939.82
  4. Step 4: Simplify right side
    82,378.89x = 6,665,290,156.98
  5. Step 5: Solve for x
    x = 6,665,290,156.98/82,378.89
  6. Step 6: Final answer
    x = 80,910.17

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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.