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Finding the Fourth Proportional to 64,653.92, 89,221.44 and 36,359.60

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Solution

The fourth proportional to 64,653.92, 89,221.44 and 36,359.60 is: 50,175.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,653.92 : 89,221.44 = 36,359.60 : x
  2. Step 2: Convert to fraction form
    64,653.92/89,221.44 = 36,359.60/x
  3. Step 3: Cross multiply
    64,653.92x = 89,221.44 × 36,359.60
  4. Step 4: Simplify right side
    64,653.92x = 3,244,055,869.82
  5. Step 5: Solve for x
    x = 3,244,055,869.82/64,653.92
  6. Step 6: Final answer
    x = 50,175.70

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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.