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Finding the Fourth Proportional to 65,197.70, 97,861.35 and 31,955.30

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Solution

The fourth proportional to 65,197.70, 97,861.35 and 31,955.30 is: 47,964.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,197.70 : 97,861.35 = 31,955.30 : x
  2. Step 2: Convert to fraction form
    65,197.70/97,861.35 = 31,955.30/x
  3. Step 3: Cross multiply
    65,197.70x = 97,861.35 × 31,955.30
  4. Step 4: Simplify right side
    65,197.70x = 3,127,188,797.66
  5. Step 5: Solve for x
    x = 3,127,188,797.66/65,197.70
  6. Step 6: Final answer
    x = 47,964.71

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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.