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Finding the Fourth Proportional to 72,662.80, 109,063.80 and 37,627.60

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Solution

The fourth proportional to 72,662.80, 109,063.80 and 37,627.60 is: 56,477.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,662.80 : 109,063.80 = 37,627.60 : x
  2. Step 2: Convert to fraction form
    72,662.80/109,063.80 = 37,627.60/x
  3. Step 3: Cross multiply
    72,662.80x = 109,063.80 × 37,627.60
  4. Step 4: Simplify right side
    72,662.80x = 4,103,809,040.88
  5. Step 5: Solve for x
    x = 4,103,809,040.88/72,662.80
  6. Step 6: Final answer
    x = 56,477.44

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Why These Related Problems?

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