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Finding the Fourth Proportional to 90,540.64, 124,946.46 and 50,255.20

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Solution

The fourth proportional to 90,540.64, 124,946.46 and 50,255.20 is: 69,352.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,540.64 : 124,946.46 = 50,255.20 : x
  2. Step 2: Convert to fraction form
    90,540.64/124,946.46 = 50,255.20/x
  3. Step 3: Cross multiply
    90,540.64x = 124,946.46 × 50,255.20
  4. Step 4: Simplify right side
    90,540.64x = 6,279,209,336.59
  5. Step 5: Solve for x
    x = 6,279,209,336.59/90,540.64
  6. Step 6: Final answer
    x = 69,352.39

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.