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Finding the Fourth Proportional to 72,804.27, 100,453.28 and 40,961.55

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Solution

The fourth proportional to 72,804.27, 100,453.28 and 40,961.55 is: 56,517.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,804.27 : 100,453.28 = 40,961.55 : x
  2. Step 2: Convert to fraction form
    72,804.27/100,453.28 = 40,961.55/x
  3. Step 3: Cross multiply
    72,804.27x = 100,453.28 × 40,961.55
  4. Step 4: Simplify right side
    72,804.27x = 4,114,721,846.58
  5. Step 5: Solve for x
    x = 4,114,721,846.58/72,804.27
  6. Step 6: Final answer
    x = 56,517.59

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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.