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Finding the Fourth Proportional to 51,353.89, 76,981.62 and 21,730.97

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Solution

The fourth proportional to 51,353.89, 76,981.62 and 21,730.97 is: 32,575.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,353.89 : 76,981.62 = 21,730.97 : x
  2. Step 2: Convert to fraction form
    51,353.89/76,981.62 = 21,730.97/x
  3. Step 3: Cross multiply
    51,353.89x = 76,981.62 × 21,730.97
  4. Step 4: Simplify right side
    51,353.89x = 1,672,885,467.23
  5. Step 5: Solve for x
    x = 1,672,885,467.23/51,353.89
  6. Step 6: Final answer
    x = 32,575.63

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1.5x scale

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.