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Finding the Fourth Proportional to 89,039.37, 122,863.07 and 70,936.01

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Solution

The fourth proportional to 89,039.37, 122,863.07 and 70,936.01 is: 97,882.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,039.37 : 122,863.07 = 70,936.01 : x
  2. Step 2: Convert to fraction form
    89,039.37/122,863.07 = 70,936.01/x
  3. Step 3: Cross multiply
    89,039.37x = 122,863.07 × 70,936.01
  4. Step 4: Simplify right side
    89,039.37x = 8,715,414,993.16
  5. Step 5: Solve for x
    x = 8,715,414,993.16/89,039.37
  6. Step 6: Final answer
    x = 97,882.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.