Home / 77,212,677-115,818,917.68-19,704,949.45

Finding the Fourth Proportional to 77,212,677, 115,818,917.68 and 19,704,949.45

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Solution

The fourth proportional to 77,212,677, 115,818,917.68 and 19,704,949.45 is: 29,557,399.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,212,677 : 115,818,917.68 = 19,704,949.45 : x
  2. Step 2: Convert to fraction form
    77,212,677/115,818,917.68 = 19,704,949.45/x
  3. Step 3: Cross multiply
    77,212,677x = 115,818,917.68 × 19,704,949.45
  4. Step 4: Simplify right side
    77,212,677x = 2,282,205,918,238,111.50
  5. Step 5: Solve for x
    x = 2,282,205,918,238,111.50/77,212,677
  6. Step 6: Final answer
    x = 29,557,399.21

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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.