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Finding the Fourth Proportional to 52,765.20, 78,994.20 and 51,229.20

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Solution

The fourth proportional to 52,765.20, 78,994.20 and 51,229.20 is: 76,694.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,765.20 : 78,994.20 = 51,229.20 : x
  2. Step 2: Convert to fraction form
    52,765.20/78,994.20 = 51,229.20/x
  3. Step 3: Cross multiply
    52,765.20x = 78,994.20 × 51,229.20
  4. Step 4: Simplify right side
    52,765.20x = 4,046,809,670.64
  5. Step 5: Solve for x
    x = 4,046,809,670.64/52,765.20
  6. Step 6: Final answer
    x = 76,694.67

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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.