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Finding the Fourth Proportional to 71,179.78, 98,237.85 and 40,964.47

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Solution

The fourth proportional to 71,179.78, 98,237.85 and 40,964.47 is: 56,536.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,179.78 : 98,237.85 = 40,964.47 : x
  2. Step 2: Convert to fraction form
    71,179.78/98,237.85 = 40,964.47/x
  3. Step 3: Cross multiply
    71,179.78x = 98,237.85 × 40,964.47
  4. Step 4: Simplify right side
    71,179.78x = 4,024,261,459.19
  5. Step 5: Solve for x
    x = 4,024,261,459.19/71,179.78
  6. Step 6: Final answer
    x = 56,536.58

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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.