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Finding the Fourth Proportional to 71,168.79, 106,765.47 and 29,071.74

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Solution

The fourth proportional to 71,168.79, 106,765.47 and 29,071.74 is: 43,612.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,168.79 : 106,765.47 = 29,071.74 : x
  2. Step 2: Convert to fraction form
    71,168.79/106,765.47 = 29,071.74/x
  3. Step 3: Cross multiply
    71,168.79x = 106,765.47 × 29,071.74
  4. Step 4: Simplify right side
    71,168.79x = 3,103,857,984.82
  5. Step 5: Solve for x
    x = 3,103,857,984.82/71,168.79
  6. Step 6: Final answer
    x = 43,612.63

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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.