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Finding the Fourth Proportional to 39,906.10, 55,070.76 and 22,001.80

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Solution

The fourth proportional to 39,906.10, 55,070.76 and 22,001.80 is: 30,362.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,906.10 : 55,070.76 = 22,001.80 : x
  2. Step 2: Convert to fraction form
    39,906.10/55,070.76 = 22,001.80/x
  3. Step 3: Cross multiply
    39,906.10x = 55,070.76 × 22,001.80
  4. Step 4: Simplify right side
    39,906.10x = 1,211,655,847.37
  5. Step 5: Solve for x
    x = 1,211,655,847.37/39,906.10
  6. Step 6: Final answer
    x = 30,362.67

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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.