Home / 81,104,236.86-121,656,355.31-19,692,981.95

Finding the Fourth Proportional to 81,104,236.86, 121,656,355.31 and 19,692,981.95

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Solution

The fourth proportional to 81,104,236.86, 121,656,355.31 and 19,692,981.95 is: 29,539,472.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,104,236.86 : 121,656,355.31 = 19,692,981.95 : x
  2. Step 2: Convert to fraction form
    81,104,236.86/121,656,355.31 = 19,692,981.95/x
  3. Step 3: Cross multiply
    81,104,236.86x = 121,656,355.31 × 19,692,981.95
  4. Step 4: Simplify right side
    81,104,236.86x = 2,395,776,408,515,870
  5. Step 5: Solve for x
    x = 2,395,776,408,515,870/81,104,236.86
  6. Step 6: Final answer
    x = 29,539,472.92

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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.