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Finding the Fourth Proportional to 103,976.64, 155,978.86 and 36,492.66

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Solution

The fourth proportional to 103,976.64, 155,978.86 and 36,492.66 is: 54,743.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,976.64 : 155,978.86 = 36,492.66 : x
  2. Step 2: Convert to fraction form
    103,976.64/155,978.86 = 36,492.66/x
  3. Step 3: Cross multiply
    103,976.64x = 155,978.86 × 36,492.66
  4. Step 4: Simplify right side
    103,976.64x = 5,692,083,505.17
  5. Step 5: Solve for x
    x = 5,692,083,505.17/103,976.64
  6. Step 6: Final answer
    x = 54,743.87

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.