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Finding the Fourth Proportional to 40,603.21, 60,915.30 and 12,522.63

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Solution

The fourth proportional to 40,603.21, 60,915.30 and 12,522.63 is: 18,787.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,603.21 : 60,915.30 = 12,522.63 : x
  2. Step 2: Convert to fraction form
    40,603.21/60,915.30 = 12,522.63/x
  3. Step 3: Cross multiply
    40,603.21x = 60,915.30 × 12,522.63
  4. Step 4: Simplify right side
    40,603.21x = 762,819,763.24
  5. Step 5: Solve for x
    x = 762,819,763.24/40,603.21
  6. Step 6: Final answer
    x = 18,787.18

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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.