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Finding the Fourth Proportional to 70,469.87, 97,245.36 and 42,191.15

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Solution

The fourth proportional to 70,469.87, 97,245.36 and 42,191.15 is: 58,221.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,469.87 : 97,245.36 = 42,191.15 : x
  2. Step 2: Convert to fraction form
    70,469.87/97,245.36 = 42,191.15/x
  3. Step 3: Cross multiply
    70,469.87x = 97,245.36 × 42,191.15
  4. Step 4: Simplify right side
    70,469.87x = 4,102,893,084.34
  5. Step 5: Solve for x
    x = 4,102,893,084.34/70,469.87
  6. Step 6: Final answer
    x = 58,221.95

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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.