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Finding the Fourth Proportional to 71,760.96, 107,646.96 and 21,845.34

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Solution

The fourth proportional to 71,760.96, 107,646.96 and 21,845.34 is: 32,769.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,760.96 : 107,646.96 = 21,845.34 : x
  2. Step 2: Convert to fraction form
    71,760.96/107,646.96 = 21,845.34/x
  3. Step 3: Cross multiply
    71,760.96x = 107,646.96 × 21,845.34
  4. Step 4: Simplify right side
    71,760.96x = 2,351,584,441.17
  5. Step 5: Solve for x
    x = 2,351,584,441.17/71,760.96
  6. Step 6: Final answer
    x = 32,769.69

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1.5x scale

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.