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Finding the Fourth Proportional to 37,170, 51,301.08 and 21,255.12

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Solution

The fourth proportional to 37,170, 51,301.08 and 21,255.12 is: 29,335.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,170 : 51,301.08 = 21,255.12 : x
  2. Step 2: Convert to fraction form
    37,170/51,301.08 = 21,255.12/x
  3. Step 3: Cross multiply
    37,170x = 51,301.08 × 21,255.12
  4. Step 4: Simplify right side
    37,170x = 1,090,410,611.53
  5. Step 5: Solve for x
    x = 1,090,410,611.53/37,170
  6. Step 6: Final answer
    x = 29,335.77

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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.