Home / 81,972,004.60-122,958,006.90-21,387,730.60

Finding the Fourth Proportional to 81,972,004.60, 122,958,006.90 and 21,387,730.60

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Solution

The fourth proportional to 81,972,004.60, 122,958,006.90 and 21,387,730.60 is: 32,081,595.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,972,004.60 : 122,958,006.90 = 21,387,730.60 : x
  2. Step 2: Convert to fraction form
    81,972,004.60/122,958,006.90 = 21,387,730.60/x
  3. Step 3: Cross multiply
    81,972,004.60x = 122,958,006.90 × 21,387,730.60
  4. Step 4: Simplify right side
    81,972,004.60x = 2,629,792,726,690,141.50
  5. Step 5: Solve for x
    x = 2,629,792,726,690,141.50/81,972,004.60
  6. Step 6: Final answer
    x = 32,081,595.90

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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.