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Finding the Fourth Proportional to 71,642.87, 98,838.29 and 43,299.35

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Solution

The fourth proportional to 71,642.87, 98,838.29 and 43,299.35 is: 59,735.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,642.87 : 98,838.29 = 43,299.35 : x
  2. Step 2: Convert to fraction form
    71,642.87/98,838.29 = 43,299.35/x
  3. Step 3: Cross multiply
    71,642.87x = 98,838.29 × 43,299.35
  4. Step 4: Simplify right side
    71,642.87x = 4,279,633,712.11
  5. Step 5: Solve for x
    x = 4,279,633,712.11/71,642.87
  6. Step 6: Final answer
    x = 59,735.65

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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.