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Finding the Fourth Proportional to 70,751.76, 97,635.84 and 38,919.96

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Solution

The fourth proportional to 70,751.76, 97,635.84 and 38,919.96 is: 53,708.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,751.76 : 97,635.84 = 38,919.96 : x
  2. Step 2: Convert to fraction form
    70,751.76/97,635.84 = 38,919.96/x
  3. Step 3: Cross multiply
    70,751.76x = 97,635.84 × 38,919.96
  4. Step 4: Simplify right side
    70,751.76x = 3,799,982,987.37
  5. Step 5: Solve for x
    x = 3,799,982,987.37/70,751.76
  6. Step 6: Final answer
    x = 53,708.67

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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.