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Finding the Fourth Proportional to 84,871.78, 127,306.85 and 51,601.03

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Solution

The fourth proportional to 84,871.78, 127,306.85 and 51,601.03 is: 77,401.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,871.78 : 127,306.85 = 51,601.03 : x
  2. Step 2: Convert to fraction form
    84,871.78/127,306.85 = 51,601.03/x
  3. Step 3: Cross multiply
    84,871.78x = 127,306.85 × 51,601.03
  4. Step 4: Simplify right side
    84,871.78x = 6,569,164,586.06
  5. Step 5: Solve for x
    x = 6,569,164,586.06/84,871.78
  6. Step 6: Final answer
    x = 77,401.05

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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.