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Finding the Fourth Proportional to 44,776.76, 67,179.72 and 21,405

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Solution

The fourth proportional to 44,776.76, 67,179.72 and 21,405 is: 32,114.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,776.76 : 67,179.72 = 21,405 : x
  2. Step 2: Convert to fraction form
    44,776.76/67,179.72 = 21,405/x
  3. Step 3: Cross multiply
    44,776.76x = 67,179.72 × 21,405
  4. Step 4: Simplify right side
    44,776.76x = 1,437,981,906.60
  5. Step 5: Solve for x
    x = 1,437,981,906.60/44,776.76
  6. Step 6: Final answer
    x = 32,114.47

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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.