Home / 81,904.24-122,783.24-31,972.76

Finding the Fourth Proportional to 81,904.24, 122,783.24 and 31,972.76

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Solution

The fourth proportional to 81,904.24, 122,783.24 and 31,972.76 is: 47,930.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,904.24 : 122,783.24 = 31,972.76 : x
  2. Step 2: Convert to fraction form
    81,904.24/122,783.24 = 31,972.76/x
  3. Step 3: Cross multiply
    81,904.24x = 122,783.24 × 31,972.76
  4. Step 4: Simplify right side
    81,904.24x = 3,925,719,064.54
  5. Step 5: Solve for x
    x = 3,925,719,064.54/81,904.24
  6. Step 6: Final answer
    x = 47,930.60

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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.