Home / 72,686,780.31-100,307,757.15-39,647,027.73

Finding the Fourth Proportional to 72,686,780.31, 100,307,757.15 and 39,647,027.73

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Solution

The fourth proportional to 72,686,780.31, 100,307,757.15 and 39,647,027.73 is: 54,712,898.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,686,780.31 : 100,307,757.15 = 39,647,027.73 : x
  2. Step 2: Convert to fraction form
    72,686,780.31/100,307,757.15 = 39,647,027.73/x
  3. Step 3: Cross multiply
    72,686,780.31x = 100,307,757.15 × 39,647,027.73
  4. Step 4: Simplify right side
    72,686,780.31x = 3,976,904,429,260,155.50
  5. Step 5: Solve for x
    x = 3,976,904,429,260,155.50/72,686,780.31
  6. Step 6: Final answer
    x = 54,712,898.44

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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.