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Finding the Fourth Proportional to 84,999.38, 127,456.74 and 49,472.51

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Solution

The fourth proportional to 84,999.38, 127,456.74 and 49,472.51 is: 74,184.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,999.38 : 127,456.74 = 49,472.51 : x
  2. Step 2: Convert to fraction form
    84,999.38/127,456.74 = 49,472.51/x
  3. Step 3: Cross multiply
    84,999.38x = 127,456.74 × 49,472.51
  4. Step 4: Simplify right side
    84,999.38x = 6,305,604,206.93
  5. Step 5: Solve for x
    x = 6,305,604,206.93/84,999.38
  6. Step 6: Final answer
    x = 74,184.12

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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.