Home / 81,856.24-112,975.16-51,658.02

Finding the Fourth Proportional to 81,856.24, 112,975.16 and 51,658.02

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Solution

The fourth proportional to 81,856.24, 112,975.16 and 51,658.02 is: 71,296.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,856.24 : 112,975.16 = 51,658.02 : x
  2. Step 2: Convert to fraction form
    81,856.24/112,975.16 = 51,658.02/x
  3. Step 3: Cross multiply
    81,856.24x = 112,975.16 × 51,658.02
  4. Step 4: Simplify right side
    81,856.24x = 5,836,072,816.49
  5. Step 5: Solve for x
    x = 5,836,072,816.49/81,856.24
  6. Step 6: Final answer
    x = 71,296.62

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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.