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Finding the Fourth Proportional to 40,362.68, 60,561.78 and 20,657.48

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Solution

The fourth proportional to 40,362.68, 60,561.78 and 20,657.48 is: 30,995.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,362.68 : 60,561.78 = 20,657.48 : x
  2. Step 2: Convert to fraction form
    40,362.68/60,561.78 = 20,657.48/x
  3. Step 3: Cross multiply
    40,362.68x = 60,561.78 × 20,657.48
  4. Step 4: Simplify right side
    40,362.68x = 1,251,053,759.11
  5. Step 5: Solve for x
    x = 1,251,053,759.11/40,362.68
  6. Step 6: Final answer
    x = 30,995.31

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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.