Home / 81,093.23-121,626.63-28,490.41

Finding the Fourth Proportional to 81,093.23, 121,626.63 and 28,490.41

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Solution

The fourth proportional to 81,093.23, 121,626.63 and 28,490.41 is: 42,730.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,093.23 : 121,626.63 = 28,490.41 : x
  2. Step 2: Convert to fraction form
    81,093.23/121,626.63 = 28,490.41/x
  3. Step 3: Cross multiply
    81,093.23x = 121,626.63 × 28,490.41
  4. Step 4: Simplify right side
    81,093.23x = 3,465,192,555.62
  5. Step 5: Solve for x
    x = 3,465,192,555.62/81,093.23
  6. Step 6: Final answer
    x = 42,730.97

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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.