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Finding the Fourth Proportional to 37,891.79, 56,764.95 and 21,201.27

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Solution

The fourth proportional to 37,891.79, 56,764.95 and 21,201.27 is: 31,761.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,891.79 : 56,764.95 = 21,201.27 : x
  2. Step 2: Convert to fraction form
    37,891.79/56,764.95 = 21,201.27/x
  3. Step 3: Cross multiply
    37,891.79x = 56,764.95 × 21,201.27
  4. Step 4: Simplify right side
    37,891.79x = 1,203,489,031.49
  5. Step 5: Solve for x
    x = 1,203,489,031.49/37,891.79
  6. Step 6: Final answer
    x = 31,761.21

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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.