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Finding the Fourth Proportional to 89,037.52, 122,859.72 and 53,219.92

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Solution

The fourth proportional to 89,037.52, 122,859.72 and 53,219.92 is: 73,436.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,037.52 : 122,859.72 = 53,219.92 : x
  2. Step 2: Convert to fraction form
    89,037.52/122,859.72 = 53,219.92/x
  3. Step 3: Cross multiply
    89,037.52x = 122,859.72 × 53,219.92
  4. Step 4: Simplify right side
    89,037.52x = 6,538,584,469.62
  5. Step 5: Solve for x
    x = 6,538,584,469.62/89,037.52
  6. Step 6: Final answer
    x = 73,436.28

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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.