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Finding the Fourth Proportional to 72,002.05, 100,906.55 and 72,002.05

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Solution

The fourth proportional to 72,002.05, 100,906.55 and 72,002.05 is: 100,906.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,002.05 : 100,906.55 = 72,002.05 : x
  2. Step 2: Convert to fraction form
    72,002.05/100,906.55 = 72,002.05/x
  3. Step 3: Cross multiply
    72,002.05x = 100,906.55 × 72,002.05
  4. Step 4: Simplify right side
    72,002.05x = 7,265,478,458.43
  5. Step 5: Solve for x
    x = 7,265,478,458.43/72,002.05
  6. Step 6: Final answer
    x = 100,906.55

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.