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Finding the Fourth Proportional to 79,302, 109,441.08 and 45,778.80

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Solution

The fourth proportional to 79,302, 109,441.08 and 45,778.80 is: 63,177.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,302 : 109,441.08 = 45,778.80 : x
  2. Step 2: Convert to fraction form
    79,302/109,441.08 = 45,778.80/x
  3. Step 3: Cross multiply
    79,302x = 109,441.08 × 45,778.80
  4. Step 4: Simplify right side
    79,302x = 5,010,081,313.10
  5. Step 5: Solve for x
    x = 5,010,081,313.10/79,302
  6. Step 6: Final answer
    x = 63,177.24

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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.