Home / 80,752.87-121,137.38-30,874.93

Finding the Fourth Proportional to 80,752.87, 121,137.38 and 30,874.93

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Solution

The fourth proportional to 80,752.87, 121,137.38 and 30,874.93 is: 46,315.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,752.87 : 121,137.38 = 30,874.93 : x
  2. Step 2: Convert to fraction form
    80,752.87/121,137.38 = 30,874.93/x
  3. Step 3: Cross multiply
    80,752.87x = 121,137.38 × 30,874.93
  4. Step 4: Simplify right side
    80,752.87x = 3,740,108,127.88
  5. Step 5: Solve for x
    x = 3,740,108,127.88/80,752.87
  6. Step 6: Final answer
    x = 46,315.48

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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.