Home / 81,943.20-122,914.80-26,539.20

Finding the Fourth Proportional to 81,943.20, 122,914.80 and 26,539.20

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Solution

The fourth proportional to 81,943.20, 122,914.80 and 26,539.20 is: 39,808.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,943.20 : 122,914.80 = 26,539.20 : x
  2. Step 2: Convert to fraction form
    81,943.20/122,914.80 = 26,539.20/x
  3. Step 3: Cross multiply
    81,943.20x = 122,914.80 × 26,539.20
  4. Step 4: Simplify right side
    81,943.20x = 3,262,060,460.16
  5. Step 5: Solve for x
    x = 3,262,060,460.16/81,943.20
  6. Step 6: Final answer
    x = 39,808.80

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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.