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Finding the Fourth Proportional to 64,372.56, 88,865.16 and 40,510.80

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Solution

The fourth proportional to 64,372.56, 88,865.16 and 40,510.80 is: 55,924.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,372.56 : 88,865.16 = 40,510.80 : x
  2. Step 2: Convert to fraction form
    64,372.56/88,865.16 = 40,510.80/x
  3. Step 3: Cross multiply
    64,372.56x = 88,865.16 × 40,510.80
  4. Step 4: Simplify right side
    64,372.56x = 3,599,998,723.73
  5. Step 5: Solve for x
    x = 3,599,998,723.73/64,372.56
  6. Step 6: Final answer
    x = 55,924.43

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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.