Home / 81,310.91-112,212.51-50,272.91

Finding the Fourth Proportional to 81,310.91, 112,212.51 and 50,272.91

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Solution

The fourth proportional to 81,310.91, 112,212.51 and 50,272.91 is: 69,378.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,310.91 : 112,212.51 = 50,272.91 : x
  2. Step 2: Convert to fraction form
    81,310.91/112,212.51 = 50,272.91/x
  3. Step 3: Cross multiply
    81,310.91x = 112,212.51 × 50,272.91
  4. Step 4: Simplify right side
    81,310.91x = 5,641,249,416.10
  5. Step 5: Solve for x
    x = 5,641,249,416.10/81,310.91
  6. Step 6: Final answer
    x = 69,378.75

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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.