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Finding the Fourth Proportional to 89,957.78, 134,928.83 and 36,655.37

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Solution

The fourth proportional to 89,957.78, 134,928.83 and 36,655.37 is: 54,979.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,957.78 : 134,928.83 = 36,655.37 : x
  2. Step 2: Convert to fraction form
    89,957.78/134,928.83 = 36,655.37/x
  3. Step 3: Cross multiply
    89,957.78x = 134,928.83 × 36,655.37
  4. Step 4: Simplify right side
    89,957.78x = 4,945,865,329.40
  5. Step 5: Solve for x
    x = 4,945,865,329.40/89,957.78
  6. Step 6: Final answer
    x = 54,979.85

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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.