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Finding the Fourth Proportional to 64,902.69, 97,366.05 and 20,540.61

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Solution

The fourth proportional to 64,902.69, 97,366.05 and 20,540.61 is: 30,814.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,902.69 : 97,366.05 = 20,540.61 : x
  2. Step 2: Convert to fraction form
    64,902.69/97,366.05 = 20,540.61/x
  3. Step 3: Cross multiply
    64,902.69x = 97,366.05 × 20,540.61
  4. Step 4: Simplify right side
    64,902.69x = 1,999,958,060.29
  5. Step 5: Solve for x
    x = 1,999,958,060.29/64,902.69
  6. Step 6: Final answer
    x = 30,814.72

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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.