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Finding the Fourth Proportional to 89,863.97, 134,811.81 and 30,685.77

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Solution

The fourth proportional to 89,863.97, 134,811.81 and 30,685.77 is: 46,034.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,863.97 : 134,811.81 = 30,685.77 : x
  2. Step 2: Convert to fraction form
    89,863.97/134,811.81 = 30,685.77/x
  3. Step 3: Cross multiply
    89,863.97x = 134,811.81 × 30,685.77
  4. Step 4: Simplify right side
    89,863.97x = 4,136,804,194.94
  5. Step 5: Solve for x
    x = 4,136,804,194.94/89,863.97
  6. Step 6: Final answer
    x = 46,034.07

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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.