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Finding the Fourth Proportional to 63,211.72, 94,785.84 and 21,076.89

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Solution

The fourth proportional to 63,211.72, 94,785.84 and 21,076.89 is: 31,604.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,211.72 : 94,785.84 = 21,076.89 : x
  2. Step 2: Convert to fraction form
    63,211.72/94,785.84 = 21,076.89/x
  3. Step 3: Cross multiply
    63,211.72x = 94,785.84 × 21,076.89
  4. Step 4: Simplify right side
    63,211.72x = 1,997,790,545.51
  5. Step 5: Solve for x
    x = 1,997,790,545.51/63,211.72
  6. Step 6: Final answer
    x = 31,604.75

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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.