Home / 81,781,468.80-122,672,203.20-74,607,015.30

Finding the Fourth Proportional to 81,781,468.80, 122,672,203.20 and 74,607,015.30

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Solution

The fourth proportional to 81,781,468.80, 122,672,203.20 and 74,607,015.30 is: 111,910,522.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,781,468.80 : 122,672,203.20 = 74,607,015.30 : x
  2. Step 2: Convert to fraction form
    81,781,468.80/122,672,203.20 = 74,607,015.30/x
  3. Step 3: Cross multiply
    81,781,468.80x = 122,672,203.20 × 74,607,015.30
  4. Step 4: Simplify right side
    81,781,468.80x = 9,152,206,941,027,108
  5. Step 5: Solve for x
    x = 9,152,206,941,027,108/81,781,468.80
  6. Step 6: Final answer
    x = 111,910,522.95

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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.