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Finding the Fourth Proportional to 40,503.78, 60,753.60 and 14,206.50

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Solution

The fourth proportional to 40,503.78, 60,753.60 and 14,206.50 is: 21,309.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,503.78 : 60,753.60 = 14,206.50 : x
  2. Step 2: Convert to fraction form
    40,503.78/60,753.60 = 14,206.50/x
  3. Step 3: Cross multiply
    40,503.78x = 60,753.60 × 14,206.50
  4. Step 4: Simplify right side
    40,503.78x = 863,096,018.40
  5. Step 5: Solve for x
    x = 863,096,018.40/40,503.78
  6. Step 6: Final answer
    x = 21,309.02

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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.