Home / 81,780,131.80-122,565,999.30-43,460,003.80

Finding the Fourth Proportional to 81,780,131.80, 122,565,999.30 and 43,460,003.80

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Solution

The fourth proportional to 81,780,131.80, 122,565,999.30 and 43,460,003.80 is: 65,134,632.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,780,131.80 : 122,565,999.30 = 43,460,003.80 : x
  2. Step 2: Convert to fraction form
    81,780,131.80/122,565,999.30 = 43,460,003.80/x
  3. Step 3: Cross multiply
    81,780,131.80x = 122,565,999.30 × 43,460,003.80
  4. Step 4: Simplify right side
    81,780,131.80x = 5,326,718,795,328,797
  5. Step 5: Solve for x
    x = 5,326,718,795,328,797/81,780,131.80
  6. Step 6: Final answer
    x = 65,134,632.07

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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.