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Finding the Fourth Proportional to 64,255.91, 88,662.57 and 40,365.66

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Solution

The fourth proportional to 64,255.91, 88,662.57 and 40,365.66 is: 55,697.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,255.91 : 88,662.57 = 40,365.66 : x
  2. Step 2: Convert to fraction form
    64,255.91/88,662.57 = 40,365.66/x
  3. Step 3: Cross multiply
    64,255.91x = 88,662.57 × 40,365.66
  4. Step 4: Simplify right side
    64,255.91x = 3,578,923,155.35
  5. Step 5: Solve for x
    x = 3,578,923,155.35/64,255.91
  6. Step 6: Final answer
    x = 55,697.97

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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.