Home / 81,661,041.40-122,633,279.70-43,397,289.40

Finding the Fourth Proportional to 81,661,041.40, 122,633,279.70 and 43,397,289.40

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Solution

The fourth proportional to 81,661,041.40, 122,633,279.70 and 43,397,289.40 is: 65,171,247.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,661,041.40 : 122,633,279.70 = 43,397,289.40 : x
  2. Step 2: Convert to fraction form
    81,661,041.40/122,633,279.70 = 43,397,289.40/x
  3. Step 3: Cross multiply
    81,661,041.40x = 122,633,279.70 × 43,397,289.40
  4. Step 4: Simplify right side
    81,661,041.40x = 5,321,951,929,212,045
  5. Step 5: Solve for x
    x = 5,321,951,929,212,045/81,661,041.40
  6. Step 6: Final answer
    x = 65,171,247.37

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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.