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Finding the Fourth Proportional to 60,725.89, 91,101.80 and 21,285.37

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Solution

The fourth proportional to 60,725.89, 91,101.80 and 21,285.37 is: 31,932.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,725.89 : 91,101.80 = 21,285.37 : x
  2. Step 2: Convert to fraction form
    60,725.89/91,101.80 = 21,285.37/x
  3. Step 3: Cross multiply
    60,725.89x = 91,101.80 × 21,285.37
  4. Step 4: Simplify right side
    60,725.89x = 1,939,135,520.67
  5. Step 5: Solve for x
    x = 1,939,135,520.67/60,725.89
  6. Step 6: Final answer
    x = 31,932.60

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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.