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Finding the Fourth Proportional to 40,620.84, 60,915.11 and 15,647.10

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Solution

The fourth proportional to 40,620.84, 60,915.11 and 15,647.10 is: 23,464.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,620.84 : 60,915.11 = 15,647.10 : x
  2. Step 2: Convert to fraction form
    40,620.84/60,915.11 = 15,647.10/x
  3. Step 3: Cross multiply
    40,620.84x = 60,915.11 × 15,647.10
  4. Step 4: Simplify right side
    40,620.84x = 953,144,739.45
  5. Step 5: Solve for x
    x = 953,144,739.45/40,620.84
  6. Step 6: Final answer
    x = 23,464.43

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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.