Home / 81,387.46-122,160.09-39,297.22

Finding the Fourth Proportional to 81,387.46, 122,160.09 and 39,297.22

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Solution

The fourth proportional to 81,387.46, 122,160.09 and 39,297.22 is: 58,983.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,387.46 : 122,160.09 = 39,297.22 : x
  2. Step 2: Convert to fraction form
    81,387.46/122,160.09 = 39,297.22/x
  3. Step 3: Cross multiply
    81,387.46x = 122,160.09 × 39,297.22
  4. Step 4: Simplify right side
    81,387.46x = 4,800,551,931.95
  5. Step 5: Solve for x
    x = 4,800,551,931.95/81,387.46
  6. Step 6: Final answer
    x = 58,983.93

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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.