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Finding the Fourth Proportional to 40,474, 60,596.48 and 21,455.28

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Solution

The fourth proportional to 40,474, 60,596.48 and 21,455.28 is: 32,122.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,474 : 60,596.48 = 21,455.28 : x
  2. Step 2: Convert to fraction form
    40,474/60,596.48 = 21,455.28/x
  3. Step 3: Cross multiply
    40,474x = 60,596.48 × 21,455.28
  4. Step 4: Simplify right side
    40,474x = 1,300,114,445.41
  5. Step 5: Solve for x
    x = 1,300,114,445.41/40,474
  6. Step 6: Final answer
    x = 32,122.21

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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.