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Finding the Fourth Proportional to 79,247.96, 109,362.96 and 43,438.68

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Solution

The fourth proportional to 79,247.96, 109,362.96 and 43,438.68 is: 59,945.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,247.96 : 109,362.96 = 43,438.68 : x
  2. Step 2: Convert to fraction form
    79,247.96/109,362.96 = 43,438.68/x
  3. Step 3: Cross multiply
    79,247.96x = 109,362.96 × 43,438.68
  4. Step 4: Simplify right side
    79,247.96x = 4,750,582,623.29
  5. Step 5: Solve for x
    x = 4,750,582,623.29/79,247.96
  6. Step 6: Final answer
    x = 59,945.80

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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.