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Finding the Fourth Proportional to 51,682,464.60, 71,324,978.22 and 28,477,585.50

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Solution

The fourth proportional to 51,682,464.60, 71,324,978.22 and 28,477,585.50 is: 39,300,818.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,682,464.60 : 71,324,978.22 = 28,477,585.50 : x
  2. Step 2: Convert to fraction form
    51,682,464.60/71,324,978.22 = 28,477,585.50/x
  3. Step 3: Cross multiply
    51,682,464.60x = 71,324,978.22 × 28,477,585.50
  4. Step 4: Simplify right side
    51,682,464.60x = 2,031,163,165,545,687.75
  5. Step 5: Solve for x
    x = 2,031,163,165,545,687.75/51,682,464.60
  6. Step 6: Final answer
    x = 39,300,818.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.