Home / 81,660.24-112,688.28-49,882.32

Finding the Fourth Proportional to 81,660.24, 112,688.28 and 49,882.32

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Solution

The fourth proportional to 81,660.24, 112,688.28 and 49,882.32 is: 68,835.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,660.24 : 112,688.28 = 49,882.32 : x
  2. Step 2: Convert to fraction form
    81,660.24/112,688.28 = 49,882.32/x
  3. Step 3: Cross multiply
    81,660.24x = 112,688.28 × 49,882.32
  4. Step 4: Simplify right side
    81,660.24x = 5,621,152,843.21
  5. Step 5: Solve for x
    x = 5,621,152,843.21/81,660.24
  6. Step 6: Final answer
    x = 68,835.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.