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Finding the Fourth Proportional to 63,345.44, 87,419.04 and 40,989.44

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Solution

The fourth proportional to 63,345.44, 87,419.04 and 40,989.44 is: 56,566.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,345.44 : 87,419.04 = 40,989.44 : x
  2. Step 2: Convert to fraction form
    63,345.44/87,419.04 = 40,989.44/x
  3. Step 3: Cross multiply
    63,345.44x = 87,419.04 × 40,989.44
  4. Step 4: Simplify right side
    63,345.44x = 3,583,257,494.94
  5. Step 5: Solve for x
    x = 3,583,257,494.94/63,345.44
  6. Step 6: Final answer
    x = 56,566.94

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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.