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Finding the Fourth Proportional to 36,910, 55,365 and 11,970.91

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Solution

The fourth proportional to 36,910, 55,365 and 11,970.91 is: 17,956.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,910 : 55,365 = 11,970.91 : x
  2. Step 2: Convert to fraction form
    36,910/55,365 = 11,970.91/x
  3. Step 3: Cross multiply
    36,910x = 55,365 × 11,970.91
  4. Step 4: Simplify right side
    36,910x = 662,769,432.15
  5. Step 5: Solve for x
    x = 662,769,432.15/36,910
  6. Step 6: Final answer
    x = 17,956.37

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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.