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Finding the Fourth Proportional to 52,777.20, 79,230.60 and 52,388.40

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Solution

The fourth proportional to 52,777.20, 79,230.60 and 52,388.40 is: 78,646.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,777.20 : 79,230.60 = 52,388.40 : x
  2. Step 2: Convert to fraction form
    52,777.20/79,230.60 = 52,388.40/x
  3. Step 3: Cross multiply
    52,777.20x = 79,230.60 × 52,388.40
  4. Step 4: Simplify right side
    52,777.20x = 4,150,764,365.04
  5. Step 5: Solve for x
    x = 4,150,764,365.04/52,777.20
  6. Step 6: Final answer
    x = 78,646.92

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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.