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Finding the Fourth Proportional to 72,764,797.80, 109,200,340.80 and 51,241,437.30

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Solution

The fourth proportional to 72,764,797.80, 109,200,340.80 and 51,241,437.30 is: 76,899,580.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,764,797.80 : 109,200,340.80 = 51,241,437.30 : x
  2. Step 2: Convert to fraction form
    72,764,797.80/109,200,340.80 = 51,241,437.30/x
  3. Step 3: Cross multiply
    72,764,797.80x = 109,200,340.80 × 51,241,437.30
  4. Step 4: Simplify right side
    72,764,797.80x = 5,595,582,416,241,831
  5. Step 5: Solve for x
    x = 5,595,582,416,241,831/72,764,797.80
  6. Step 6: Final answer
    x = 76,899,580.37

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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.