Home / 71,917,557.20-107,890,332.60-20,801,243.60

Finding the Fourth Proportional to 71,917,557.20, 107,890,332.60 and 20,801,243.60

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Solution

The fourth proportional to 71,917,557.20, 107,890,332.60 and 20,801,243.60 is: 31,205,913.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,917,557.20 : 107,890,332.60 = 20,801,243.60 : x
  2. Step 2: Convert to fraction form
    71,917,557.20/107,890,332.60 = 20,801,243.60/x
  3. Step 3: Cross multiply
    71,917,557.20x = 107,890,332.60 × 20,801,243.60
  4. Step 4: Simplify right side
    71,917,557.20x = 2,244,253,090,497,621.50
  5. Step 5: Solve for x
    x = 2,244,253,090,497,621.50/71,917,557.20
  6. Step 6: Final answer
    x = 31,205,913.80

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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.