Home / 80,969.15-121,450.28-27,665.91

Finding the Fourth Proportional to 80,969.15, 121,450.28 and 27,665.91

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Solution

The fourth proportional to 80,969.15, 121,450.28 and 27,665.91 is: 41,497.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,969.15 : 121,450.28 = 27,665.91 : x
  2. Step 2: Convert to fraction form
    80,969.15/121,450.28 = 27,665.91/x
  3. Step 3: Cross multiply
    80,969.15x = 121,450.28 × 27,665.91
  4. Step 4: Simplify right side
    80,969.15x = 3,360,032,377.63
  5. Step 5: Solve for x
    x = 3,360,032,377.63/80,969.15
  6. Step 6: Final answer
    x = 41,497.69

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1.5x scale

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.