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Finding the Fourth Proportional to 64,285.96, 88,704.04 and 40,395.72

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Solution

The fourth proportional to 64,285.96, 88,704.04 and 40,395.72 is: 55,739.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,285.96 : 88,704.04 = 40,395.72 : x
  2. Step 2: Convert to fraction form
    64,285.96/88,704.04 = 40,395.72/x
  3. Step 3: Cross multiply
    64,285.96x = 88,704.04 × 40,395.72
  4. Step 4: Simplify right side
    64,285.96x = 3,583,263,562.71
  5. Step 5: Solve for x
    x = 3,583,263,562.71/64,285.96
  6. Step 6: Final answer
    x = 55,739.44

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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.