Home / 81,984,136.60-122,976,204.90-21,399,862.60

Finding the Fourth Proportional to 81,984,136.60, 122,976,204.90 and 21,399,862.60

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Solution

The fourth proportional to 81,984,136.60, 122,976,204.90 and 21,399,862.60 is: 32,099,793.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,984,136.60 : 122,976,204.90 = 21,399,862.60 : x
  2. Step 2: Convert to fraction form
    81,984,136.60/122,976,204.90 = 21,399,862.60/x
  3. Step 3: Cross multiply
    81,984,136.60x = 122,976,204.90 × 21,399,862.60
  4. Step 4: Simplify right side
    81,984,136.60x = 2,631,673,887,929,447
  5. Step 5: Solve for x
    x = 2,631,673,887,929,447/81,984,136.60
  6. Step 6: Final answer
    x = 32,099,793.90

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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.