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Finding the Fourth Proportional to 64,393.66, 88,906.40 and 40,231.41

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Solution

The fourth proportional to 64,393.66, 88,906.40 and 40,231.41 is: 55,546.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,393.66 : 88,906.40 = 40,231.41 : x
  2. Step 2: Convert to fraction form
    64,393.66/88,906.40 = 40,231.41/x
  3. Step 3: Cross multiply
    64,393.66x = 88,906.40 × 40,231.41
  4. Step 4: Simplify right side
    64,393.66x = 3,576,829,830.02
  5. Step 5: Solve for x
    x = 3,576,829,830.02/64,393.66
  6. Step 6: Final answer
    x = 55,546.30

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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.