Home / 71,917,564.20-107,890,343.10-20,801,250.60

Finding the Fourth Proportional to 71,917,564.20, 107,890,343.10 and 20,801,250.60

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Solution

The fourth proportional to 71,917,564.20, 107,890,343.10 and 20,801,250.60 is: 31,205,924.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,917,564.20 : 107,890,343.10 = 20,801,250.60 : x
  2. Step 2: Convert to fraction form
    71,917,564.20/107,890,343.10 = 20,801,250.60/x
  3. Step 3: Cross multiply
    71,917,564.20x = 107,890,343.10 × 20,801,250.60
  4. Step 4: Simplify right side
    71,917,564.20x = 2,244,254,064,143,081
  5. Step 5: Solve for x
    x = 2,244,254,064,143,081/71,917,564.20
  6. Step 6: Final answer
    x = 31,205,924.30

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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.