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Finding the Fourth Proportional to 79,998.57, 110,383.60 and 51,687.86

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Solution

The fourth proportional to 79,998.57, 110,383.60 and 51,687.86 is: 71,319.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,998.57 : 110,383.60 = 51,687.86 : x
  2. Step 2: Convert to fraction form
    79,998.57/110,383.60 = 51,687.86/x
  3. Step 3: Cross multiply
    79,998.57x = 110,383.60 × 51,687.86
  4. Step 4: Simplify right side
    79,998.57x = 5,705,492,063.10
  5. Step 5: Solve for x
    x = 5,705,492,063.10/79,998.57
  6. Step 6: Final answer
    x = 71,319.93

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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.