Home / 81,789,680.40-122,784,053.40-41,379,363.60

Finding the Fourth Proportional to 81,789,680.40, 122,784,053.40 and 41,379,363.60

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Solution

The fourth proportional to 81,789,680.40, 122,784,053.40 and 41,379,363.60 is: 62,119,401.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,789,680.40 : 122,784,053.40 = 41,379,363.60 : x
  2. Step 2: Convert to fraction form
    81,789,680.40/122,784,053.40 = 41,379,363.60/x
  3. Step 3: Cross multiply
    81,789,680.40x = 122,784,053.40 × 41,379,363.60
  4. Step 4: Simplify right side
    81,789,680.40x = 5,080,725,989,920,417
  5. Step 5: Solve for x
    x = 5,080,725,989,920,417/81,789,680.40
  6. Step 6: Final answer
    x = 62,119,401.43

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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.