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Finding the Fourth Proportional to 72,343.80, 108,429.30 and 37,265.40

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Solution

The fourth proportional to 72,343.80, 108,429.30 and 37,265.40 is: 55,853.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,343.80 : 108,429.30 = 37,265.40 : x
  2. Step 2: Convert to fraction form
    72,343.80/108,429.30 = 37,265.40/x
  3. Step 3: Cross multiply
    72,343.80x = 108,429.30 × 37,265.40
  4. Step 4: Simplify right side
    72,343.80x = 4,040,661,236.22
  5. Step 5: Solve for x
    x = 4,040,661,236.22/72,343.80
  6. Step 6: Final answer
    x = 55,853.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.