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Finding the Fourth Proportional to 79,245.54, 109,359.45 and 43,438.68

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Solution

The fourth proportional to 79,245.54, 109,359.45 and 43,438.68 is: 59,945.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,245.54 : 109,359.45 = 43,438.68 : x
  2. Step 2: Convert to fraction form
    79,245.54/109,359.45 = 43,438.68/x
  3. Step 3: Cross multiply
    79,245.54x = 109,359.45 × 43,438.68
  4. Step 4: Simplify right side
    79,245.54x = 4,750,430,153.53
  5. Step 5: Solve for x
    x = 4,750,430,153.53/79,245.54
  6. Step 6: Final answer
    x = 59,945.71

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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.