Home / 81,219.53-121,850.06-31,286.23

Finding the Fourth Proportional to 81,219.53, 121,850.06 and 31,286.23

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Solution

The fourth proportional to 81,219.53, 121,850.06 and 31,286.23 is: 46,937.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,219.53 : 121,850.06 = 31,286.23 : x
  2. Step 2: Convert to fraction form
    81,219.53/121,850.06 = 31,286.23/x
  3. Step 3: Cross multiply
    81,219.53x = 121,850.06 × 31,286.23
  4. Step 4: Simplify right side
    81,219.53x = 3,812,228,541.62
  5. Step 5: Solve for x
    x = 3,812,228,541.62/81,219.53
  6. Step 6: Final answer
    x = 46,937.34

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1.5x scale

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.