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Finding the Fourth Proportional to 72,636.82, 100,227.90 and 40,799.62

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Solution

The fourth proportional to 72,636.82, 100,227.90 and 40,799.62 is: 56,297.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,636.82 : 100,227.90 = 40,799.62 : x
  2. Step 2: Convert to fraction form
    72,636.82/100,227.90 = 40,799.62/x
  3. Step 3: Cross multiply
    72,636.82x = 100,227.90 × 40,799.62
  4. Step 4: Simplify right side
    72,636.82x = 4,089,260,233.40
  5. Step 5: Solve for x
    x = 4,089,260,233.40/72,636.82
  6. Step 6: Final answer
    x = 56,297.35

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1.5x scale

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.