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Finding the Fourth Proportional to 60,789.45, 91,187.82 and 21,349.35

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Solution

The fourth proportional to 60,789.45, 91,187.82 and 21,349.35 is: 32,025.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,789.45 : 91,187.82 = 21,349.35 : x
  2. Step 2: Convert to fraction form
    60,789.45/91,187.82 = 21,349.35/x
  3. Step 3: Cross multiply
    60,789.45x = 91,187.82 × 21,349.35
  4. Step 4: Simplify right side
    60,789.45x = 1,946,800,684.92
  5. Step 5: Solve for x
    x = 1,946,800,684.92/60,789.45
  6. Step 6: Final answer
    x = 32,025.31

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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.