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Finding the Fourth Proportional to 40,363.40, 60,553.20 and 12,285.20

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Solution

The fourth proportional to 40,363.40, 60,553.20 and 12,285.20 is: 18,430.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,363.40 : 60,553.20 = 12,285.20 : x
  2. Step 2: Convert to fraction form
    40,363.40/60,553.20 = 12,285.20/x
  3. Step 3: Cross multiply
    40,363.40x = 60,553.20 × 12,285.20
  4. Step 4: Simplify right side
    40,363.40x = 743,908,172.64
  5. Step 5: Solve for x
    x = 743,908,172.64/40,363.40
  6. Step 6: Final answer
    x = 18,430.27

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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.