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Finding the Fourth Proportional to 79,330.40, 109,474.72 and 43,520.32

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Solution

The fourth proportional to 79,330.40, 109,474.72 and 43,520.32 is: 60,057.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,330.40 : 109,474.72 = 43,520.32 : x
  2. Step 2: Convert to fraction form
    79,330.40/109,474.72 = 43,520.32/x
  3. Step 3: Cross multiply
    79,330.40x = 109,474.72 × 43,520.32
  4. Step 4: Simplify right side
    79,330.40x = 4,764,374,846.31
  5. Step 5: Solve for x
    x = 4,764,374,846.31/79,330.40
  6. Step 6: Final answer
    x = 60,057.37

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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.