Home / 77,212,673.31-115,818,912.15-19,704,945.76

Finding the Fourth Proportional to 77,212,673.31, 115,818,912.15 and 19,704,945.76

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Solution

The fourth proportional to 77,212,673.31, 115,818,912.15 and 19,704,945.76 is: 29,557,393.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,212,673.31 : 115,818,912.15 = 19,704,945.76 : x
  2. Step 2: Convert to fraction form
    77,212,673.31/115,818,912.15 = 19,704,945.76/x
  3. Step 3: Cross multiply
    77,212,673.31x = 115,818,912.15 × 19,704,945.76
  4. Step 4: Simplify right side
    77,212,673.31x = 2,282,205,381,799,430.50
  5. Step 5: Solve for x
    x = 2,282,205,381,799,430.50/77,212,673.31
  6. Step 6: Final answer
    x = 29,557,393.68

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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.