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Finding the Fourth Proportional to 66,786.24, 92,164.80 and 36,978.24

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Solution

The fourth proportional to 66,786.24, 92,164.80 and 36,978.24 is: 51,029.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,786.24 : 92,164.80 = 36,978.24 : x
  2. Step 2: Convert to fraction form
    66,786.24/92,164.80 = 36,978.24/x
  3. Step 3: Cross multiply
    66,786.24x = 92,164.80 × 36,978.24
  4. Step 4: Simplify right side
    66,786.24x = 3,408,092,093.95
  5. Step 5: Solve for x
    x = 3,408,092,093.95/66,786.24
  6. Step 6: Final answer
    x = 51,029.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.