Home / 81,681.57-122,539.36-25,519.41

Finding the Fourth Proportional to 81,681.57, 122,539.36 and 25,519.41

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Solution

The fourth proportional to 81,681.57, 122,539.36 and 25,519.41 is: 38,284.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,681.57 : 122,539.36 = 25,519.41 : x
  2. Step 2: Convert to fraction form
    81,681.57/122,539.36 = 25,519.41/x
  3. Step 3: Cross multiply
    81,681.57x = 122,539.36 × 25,519.41
  4. Step 4: Simplify right side
    81,681.57x = 3,127,132,168.98
  5. Step 5: Solve for x
    x = 3,127,132,168.98/81,681.57
  6. Step 6: Final answer
    x = 38,284.43

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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.