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Finding the Fourth Proportional to 79,221.51, 109,321.29 and 43,404.39

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Solution

The fourth proportional to 79,221.51, 109,321.29 and 43,404.39 is: 59,895.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,221.51 : 109,321.29 = 43,404.39 : x
  2. Step 2: Convert to fraction form
    79,221.51/109,321.29 = 43,404.39/x
  3. Step 3: Cross multiply
    79,221.51x = 109,321.29 × 43,404.39
  4. Step 4: Simplify right side
    79,221.51x = 4,745,023,906.46
  5. Step 5: Solve for x
    x = 4,745,023,906.46/79,221.51
  6. Step 6: Final answer
    x = 59,895.65

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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.