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Finding the Fourth Proportional to 66,848, 92,250.26 and 39,991.64

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Solution

The fourth proportional to 66,848, 92,250.26 and 39,991.64 is: 55,188.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,848 : 92,250.26 = 39,991.64 : x
  2. Step 2: Convert to fraction form
    66,848/92,250.26 = 39,991.64/x
  3. Step 3: Cross multiply
    66,848x = 92,250.26 × 39,991.64
  4. Step 4: Simplify right side
    66,848x = 3,689,239,187.83
  5. Step 5: Solve for x
    x = 3,689,239,187.83/66,848
  6. Step 6: Final answer
    x = 55,188.48

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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.