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Finding the Fourth Proportional to 57,474,760.80, 86,235,760.80 and 21,100,576.80

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Solution

The fourth proportional to 57,474,760.80, 86,235,760.80 and 21,100,576.80 is: 31,659,536.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,474,760.80 : 86,235,760.80 = 21,100,576.80 : x
  2. Step 2: Convert to fraction form
    57,474,760.80/86,235,760.80 = 21,100,576.80/x
  3. Step 3: Cross multiply
    57,474,760.80x = 86,235,760.80 × 21,100,576.80
  4. Step 4: Simplify right side
    57,474,760.80x = 1,819,624,293,666,829.50
  5. Step 5: Solve for x
    x = 1,819,624,293,666,829.50/57,474,760.80
  6. Step 6: Final answer
    x = 31,659,536.61

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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.