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Finding the Fourth Proportional to 70,889.72, 97,693.28 and 50,711.61

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Solution

The fourth proportional to 70,889.72, 97,693.28 and 50,711.61 is: 69,885.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,889.72 : 97,693.28 = 50,711.61 : x
  2. Step 2: Convert to fraction form
    70,889.72/97,693.28 = 50,711.61/x
  3. Step 3: Cross multiply
    70,889.72x = 97,693.28 × 50,711.61
  4. Step 4: Simplify right side
    70,889.72x = 4,954,183,514.98
  5. Step 5: Solve for x
    x = 4,954,183,514.98/70,889.72
  6. Step 6: Final answer
    x = 69,885.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.