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Finding the Fourth Proportional to 71,783.62, 99,070.79 and 41,168.70

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Solution

The fourth proportional to 71,783.62, 99,070.79 and 41,168.70 is: 56,818.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,783.62 : 99,070.79 = 41,168.70 : x
  2. Step 2: Convert to fraction form
    71,783.62/99,070.79 = 41,168.70/x
  3. Step 3: Cross multiply
    71,783.62x = 99,070.79 × 41,168.70
  4. Step 4: Simplify right side
    71,783.62x = 4,078,615,426.43
  5. Step 5: Solve for x
    x = 4,078,615,426.43/71,783.62
  6. Step 6: Final answer
    x = 56,818.19

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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.