Home / 81,462,662.60-122,191,229.10-20,878,982.60

Finding the Fourth Proportional to 81,462,662.60, 122,191,229.10 and 20,878,982.60

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Solution

The fourth proportional to 81,462,662.60, 122,191,229.10 and 20,878,982.60 is: 31,317,765.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,462,662.60 : 122,191,229.10 = 20,878,982.60 : x
  2. Step 2: Convert to fraction form
    81,462,662.60/122,191,229.10 = 20,878,982.60/x
  3. Step 3: Cross multiply
    81,462,662.60x = 122,191,229.10 × 20,878,982.60
  4. Step 4: Simplify right side
    81,462,662.60x = 2,551,228,546,251,513.50
  5. Step 5: Solve for x
    x = 2,551,228,546,251,513.50/81,462,662.60
  6. Step 6: Final answer
    x = 31,317,765.28

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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.