Home / 81,367.38-122,055.81-31,455.18

Finding the Fourth Proportional to 81,367.38, 122,055.81 and 31,455.18

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Solution

The fourth proportional to 81,367.38, 122,055.81 and 31,455.18 is: 47,184.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,367.38 : 122,055.81 = 31,455.18 : x
  2. Step 2: Convert to fraction form
    81,367.38/122,055.81 = 31,455.18/x
  3. Step 3: Cross multiply
    81,367.38x = 122,055.81 × 31,455.18
  4. Step 4: Simplify right side
    81,367.38x = 3,839,287,473.60
  5. Step 5: Solve for x
    x = 3,839,287,473.60/81,367.38
  6. Step 6: Final answer
    x = 47,184.60

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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.