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Finding the Fourth Proportional to 64,561.63, 89,105.64 and 53,789.44

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Solution

The fourth proportional to 64,561.63, 89,105.64 and 53,789.44 is: 74,238.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,561.63 : 89,105.64 = 53,789.44 : x
  2. Step 2: Convert to fraction form
    64,561.63/89,105.64 = 53,789.44/x
  3. Step 3: Cross multiply
    64,561.63x = 89,105.64 × 53,789.44
  4. Step 4: Simplify right side
    64,561.63x = 4,792,942,476.44
  5. Step 5: Solve for x
    x = 4,792,942,476.44/64,561.63
  6. Step 6: Final answer
    x = 74,238.25

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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.