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Finding the Fourth Proportional to 64,131.80, 96,219.03 and 40,411.94

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Solution

The fourth proportional to 64,131.80, 96,219.03 and 40,411.94 is: 60,631.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,131.80 : 96,219.03 = 40,411.94 : x
  2. Step 2: Convert to fraction form
    64,131.80/96,219.03 = 40,411.94/x
  3. Step 3: Cross multiply
    64,131.80x = 96,219.03 × 40,411.94
  4. Step 4: Simplify right side
    64,131.80x = 3,888,397,667.22
  5. Step 5: Solve for x
    x = 3,888,397,667.22/64,131.80
  6. Step 6: Final answer
    x = 60,631.35

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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.