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Finding the Fourth Proportional to 84,279.38, 116,308.92 and 48,469.38

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Solution

The fourth proportional to 84,279.38, 116,308.92 and 48,469.38 is: 66,889.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,279.38 : 116,308.92 = 48,469.38 : x
  2. Step 2: Convert to fraction form
    84,279.38/116,308.92 = 48,469.38/x
  3. Step 3: Cross multiply
    84,279.38x = 116,308.92 × 48,469.38
  4. Step 4: Simplify right side
    84,279.38x = 5,637,421,240.87
  5. Step 5: Solve for x
    x = 5,637,421,240.87/84,279.38
  6. Step 6: Final answer
    x = 66,889.69

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1.5x scale

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.