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Finding the Fourth Proportional to 66,844.88, 92,245.94 and 39,988.52

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Solution

The fourth proportional to 66,844.88, 92,245.94 and 39,988.52 is: 55,184.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,844.88 : 92,245.94 = 39,988.52 : x
  2. Step 2: Convert to fraction form
    66,844.88/92,245.94 = 39,988.52/x
  3. Step 3: Cross multiply
    66,844.88x = 92,245.94 × 39,988.52
  4. Step 4: Simplify right side
    66,844.88x = 3,688,777,955.44
  5. Step 5: Solve for x
    x = 3,688,777,955.44/66,844.88
  6. Step 6: Final answer
    x = 55,184.16

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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.