Home / 80,736.80-121,113.45-30,858.88

Finding the Fourth Proportional to 80,736.80, 121,113.45 and 30,858.88

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Solution

The fourth proportional to 80,736.80, 121,113.45 and 30,858.88 is: 46,291.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,736.80 : 121,113.45 = 30,858.88 : x
  2. Step 2: Convert to fraction form
    80,736.80/121,113.45 = 30,858.88/x
  3. Step 3: Cross multiply
    80,736.80x = 121,113.45 × 30,858.88
  4. Step 4: Simplify right side
    80,736.80x = 3,737,425,419.94
  5. Step 5: Solve for x
    x = 3,737,425,419.94/80,736.80
  6. Step 6: Final answer
    x = 46,291.47

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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.