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Finding the Fourth Proportional to 71,636.81, 98,859.69 and 39,374.96

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Solution

The fourth proportional to 71,636.81, 98,859.69 and 39,374.96 is: 54,337.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,636.81 : 98,859.69 = 39,374.96 : x
  2. Step 2: Convert to fraction form
    71,636.81/98,859.69 = 39,374.96/x
  3. Step 3: Cross multiply
    71,636.81x = 98,859.69 × 39,374.96
  4. Step 4: Simplify right side
    71,636.81x = 3,892,595,845.06
  5. Step 5: Solve for x
    x = 3,892,595,845.06/71,636.81
  6. Step 6: Final answer
    x = 54,337.93

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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.