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Finding the Fourth Proportional to 89,253.51, 133,786.85 and 30,068.73

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Solution

The fourth proportional to 89,253.51, 133,786.85 and 30,068.73 is: 45,071.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,253.51 : 133,786.85 = 30,068.73 : x
  2. Step 2: Convert to fraction form
    89,253.51/133,786.85 = 30,068.73/x
  3. Step 3: Cross multiply
    89,253.51x = 133,786.85 × 30,068.73
  4. Step 4: Simplify right side
    89,253.51x = 4,022,800,745.37
  5. Step 5: Solve for x
    x = 4,022,800,745.37/89,253.51
  6. Step 6: Final answer
    x = 45,071.63

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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.