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Finding the Fourth Proportional to 84,279.79, 116,309.65 and 48,469.83

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Solution

The fourth proportional to 84,279.79, 116,309.65 and 48,469.83 is: 66,890.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,279.79 : 116,309.65 = 48,469.83 : x
  2. Step 2: Convert to fraction form
    84,279.79/116,309.65 = 48,469.83/x
  3. Step 3: Cross multiply
    84,279.79x = 116,309.65 × 48,469.83
  4. Step 4: Simplify right side
    84,279.79x = 5,637,508,687.20
  5. Step 5: Solve for x
    x = 5,637,508,687.20/84,279.79
  6. Step 6: Final answer
    x = 66,890.40

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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.