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Finding the Fourth Proportional to 52,109.30, 71,910.90 and 28,235.97

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Solution

The fourth proportional to 52,109.30, 71,910.90 and 28,235.97 is: 38,965.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,109.30 : 71,910.90 = 28,235.97 : x
  2. Step 2: Convert to fraction form
    52,109.30/71,910.90 = 28,235.97/x
  3. Step 3: Cross multiply
    52,109.30x = 71,910.90 × 28,235.97
  4. Step 4: Simplify right side
    52,109.30x = 2,030,474,015.07
  5. Step 5: Solve for x
    x = 2,030,474,015.07/52,109.30
  6. Step 6: Final answer
    x = 38,965.67

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1.5x scale

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.