Home / 81,671.04-122,399.06-76,343.85

Finding the Fourth Proportional to 81,671.04, 122,399.06 and 76,343.85

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Solution

The fourth proportional to 81,671.04, 122,399.06 and 76,343.85 is: 114,415.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,671.04 : 122,399.06 = 76,343.85 : x
  2. Step 2: Convert to fraction form
    81,671.04/122,399.06 = 76,343.85/x
  3. Step 3: Cross multiply
    81,671.04x = 122,399.06 × 76,343.85
  4. Step 4: Simplify right side
    81,671.04x = 9,344,415,095.06
  5. Step 5: Solve for x
    x = 9,344,415,095.06/81,671.04
  6. Step 6: Final answer
    x = 114,415.28

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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.