Home / 80,703.92-121,006.68-30,730.64

Finding the Fourth Proportional to 80,703.92, 121,006.68 and 30,730.64

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Solution

The fourth proportional to 80,703.92, 121,006.68 and 30,730.64 is: 46,077.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,703.92 : 121,006.68 = 30,730.64 : x
  2. Step 2: Convert to fraction form
    80,703.92/121,006.68 = 30,730.64/x
  3. Step 3: Cross multiply
    80,703.92x = 121,006.68 × 30,730.64
  4. Step 4: Simplify right side
    80,703.92x = 3,718,612,720.68
  5. Step 5: Solve for x
    x = 3,718,612,720.68/80,703.92
  6. Step 6: Final answer
    x = 46,077.23

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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.