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Finding the Fourth Proportional to 72,092.56, 108,138.84 and 37,012.72

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Solution

The fourth proportional to 72,092.56, 108,138.84 and 37,012.72 is: 55,519.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,092.56 : 108,138.84 = 37,012.72 : x
  2. Step 2: Convert to fraction form
    72,092.56/108,138.84 = 37,012.72/x
  3. Step 3: Cross multiply
    72,092.56x = 108,138.84 × 37,012.72
  4. Step 4: Simplify right side
    72,092.56x = 4,002,512,606.04
  5. Step 5: Solve for x
    x = 4,002,512,606.04/72,092.56
  6. Step 6: Final answer
    x = 55,519.08

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1.5x scale

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.