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Finding the Fourth Proportional to 63,989.55, 95,998.34 and 19,619.77

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Solution

The fourth proportional to 63,989.55, 95,998.34 and 19,619.77 is: 29,433.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,989.55 : 95,998.34 = 19,619.77 : x
  2. Step 2: Convert to fraction form
    63,989.55/95,998.34 = 19,619.77/x
  3. Step 3: Cross multiply
    63,989.55x = 95,998.34 × 19,619.77
  4. Step 4: Simplify right side
    63,989.55x = 1,883,465,013.09
  5. Step 5: Solve for x
    x = 1,883,465,013.09/63,989.55
  6. Step 6: Final answer
    x = 29,433.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.