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Finding the Fourth Proportional to 76,764,175.20, 114,978,301.20 and 66,686,479.20

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Solution

The fourth proportional to 76,764,175.20, 114,978,301.20 and 66,686,479.20 is: 99,883,807.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,764,175.20 : 114,978,301.20 = 66,686,479.20 : x
  2. Step 2: Convert to fraction form
    76,764,175.20/114,978,301.20 = 66,686,479.20/x
  3. Step 3: Cross multiply
    76,764,175.20x = 114,978,301.20 × 66,686,479.20
  4. Step 4: Simplify right side
    76,764,175.20x = 7,667,498,091,425,136
  5. Step 5: Solve for x
    x = 7,667,498,091,425,136/76,764,175.20
  6. Step 6: Final answer
    x = 99,883,807.41

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.