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Finding the Fourth Proportional to 74,721.76, 103,116.72 and 41,188.96

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Solution

The fourth proportional to 74,721.76, 103,116.72 and 41,188.96 is: 56,841.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,721.76 : 103,116.72 = 41,188.96 : x
  2. Step 2: Convert to fraction form
    74,721.76/103,116.72 = 41,188.96/x
  3. Step 3: Cross multiply
    74,721.76x = 103,116.72 × 41,188.96
  4. Step 4: Simplify right side
    74,721.76x = 4,247,270,455.41
  5. Step 5: Solve for x
    x = 4,247,270,455.41/74,721.76
  6. Step 6: Final answer
    x = 56,841.15

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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.