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Finding the Fourth Proportional to 40,503.69, 60,736.70 and 12,416.54

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Solution

The fourth proportional to 40,503.69, 60,736.70 and 12,416.54 is: 18,619.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,503.69 : 60,736.70 = 12,416.54 : x
  2. Step 2: Convert to fraction form
    40,503.69/60,736.70 = 12,416.54/x
  3. Step 3: Cross multiply
    40,503.69x = 60,736.70 × 12,416.54
  4. Step 4: Simplify right side
    40,503.69x = 754,139,392.38
  5. Step 5: Solve for x
    x = 754,139,392.38/40,503.69
  6. Step 6: Final answer
    x = 18,619.03

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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.