Home / 81,387,496.20-122,081,244.30-66,081,995.40

Finding the Fourth Proportional to 81,387,496.20, 122,081,244.30 and 66,081,995.40

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Solution

The fourth proportional to 81,387,496.20, 122,081,244.30 and 66,081,995.40 is: 99,122,993.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,387,496.20 : 122,081,244.30 = 66,081,995.40 : x
  2. Step 2: Convert to fraction form
    81,387,496.20/122,081,244.30 = 66,081,995.40/x
  3. Step 3: Cross multiply
    81,387,496.20x = 122,081,244.30 × 66,081,995.40
  4. Step 4: Simplify right side
    81,387,496.20x = 8,067,372,224,258,876
  5. Step 5: Solve for x
    x = 8,067,372,224,258,876/81,387,496.20
  6. Step 6: Final answer
    x = 99,122,993.10

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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.