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Finding the Fourth Proportional to 65,770.79, 98,657.39 and 21,397.37

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Solution

The fourth proportional to 65,770.79, 98,657.39 and 21,397.37 is: 32,096.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,770.79 : 98,657.39 = 21,397.37 : x
  2. Step 2: Convert to fraction form
    65,770.79/98,657.39 = 21,397.37/x
  3. Step 3: Cross multiply
    65,770.79x = 98,657.39 × 21,397.37
  4. Step 4: Simplify right side
    65,770.79x = 2,111,008,237.27
  5. Step 5: Solve for x
    x = 2,111,008,237.27/65,770.79
  6. Step 6: Final answer
    x = 32,096.44

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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.