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Finding the Fourth Proportional to 79,808.57, 110,135.43 and 43,998.47

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Solution

The fourth proportional to 79,808.57, 110,135.43 and 43,998.47 is: 60,717.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,808.57 : 110,135.43 = 43,998.47 : x
  2. Step 2: Convert to fraction form
    79,808.57/110,135.43 = 43,998.47/x
  3. Step 3: Cross multiply
    79,808.57x = 110,135.43 × 43,998.47
  4. Step 4: Simplify right side
    79,808.57x = 4,845,790,412.79
  5. Step 5: Solve for x
    x = 4,845,790,412.79/79,808.57
  6. Step 6: Final answer
    x = 60,717.67

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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.