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Finding the Fourth Proportional to 45,921, 68,872.44 and 12,632.52

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Solution

The fourth proportional to 45,921, 68,872.44 and 12,632.52 is: 18,946.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,921 : 68,872.44 = 12,632.52 : x
  2. Step 2: Convert to fraction form
    45,921/68,872.44 = 12,632.52/x
  3. Step 3: Cross multiply
    45,921x = 68,872.44 × 12,632.52
  4. Step 4: Simplify right side
    45,921x = 870,032,475.75
  5. Step 5: Solve for x
    x = 870,032,475.75/45,921
  6. Step 6: Final answer
    x = 18,946.29

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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.