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Finding the Fourth Proportional to 66,689.84, 92,028.60 and 36,876.08

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Solution

The fourth proportional to 66,689.84, 92,028.60 and 36,876.08 is: 50,887.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,689.84 : 92,028.60 = 36,876.08 : x
  2. Step 2: Convert to fraction form
    66,689.84/92,028.60 = 36,876.08/x
  3. Step 3: Cross multiply
    66,689.84x = 92,028.60 × 36,876.08
  4. Step 4: Simplify right side
    66,689.84x = 3,393,654,015.89
  5. Step 5: Solve for x
    x = 3,393,654,015.89/66,689.84
  6. Step 6: Final answer
    x = 50,887.12

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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.