Home / 81,977.46-122,970.62-25,821.98

Finding the Fourth Proportional to 81,977.46, 122,970.62 and 25,821.98

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Solution

The fourth proportional to 81,977.46, 122,970.62 and 25,821.98 is: 38,734.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,977.46 : 122,970.62 = 25,821.98 : x
  2. Step 2: Convert to fraction form
    81,977.46/122,970.62 = 25,821.98/x
  3. Step 3: Cross multiply
    81,977.46x = 122,970.62 × 25,821.98
  4. Step 4: Simplify right side
    81,977.46x = 3,175,344,146.26
  5. Step 5: Solve for x
    x = 3,175,344,146.26/81,977.46
  6. Step 6: Final answer
    x = 38,734.36

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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.