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Finding the Fourth Proportional to 70,211.56, 96,889.70 and 38,380.36

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Solution

The fourth proportional to 70,211.56, 96,889.70 and 38,380.36 is: 52,963.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,211.56 : 96,889.70 = 38,380.36 : x
  2. Step 2: Convert to fraction form
    70,211.56/96,889.70 = 38,380.36/x
  3. Step 3: Cross multiply
    70,211.56x = 96,889.70 × 38,380.36
  4. Step 4: Simplify right side
    70,211.56x = 3,718,661,566.29
  5. Step 5: Solve for x
    x = 3,718,661,566.29/70,211.56
  6. Step 6: Final answer
    x = 52,963.67

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1.5x scale

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.