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Finding the Fourth Proportional to 60,840.37, 91,265.91 and 21,397.78

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Solution

The fourth proportional to 60,840.37, 91,265.91 and 21,397.78 is: 32,098.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,840.37 : 91,265.91 = 21,397.78 : x
  2. Step 2: Convert to fraction form
    60,840.37/91,265.91 = 21,397.78/x
  3. Step 3: Cross multiply
    60,840.37x = 91,265.91 × 21,397.78
  4. Step 4: Simplify right side
    60,840.37x = 1,952,887,863.68
  5. Step 5: Solve for x
    x = 1,952,887,863.68/60,840.37
  6. Step 6: Final answer
    x = 32,098.55

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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.