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Finding the Fourth Proportional to 66,787.50, 92,166.76 and 36,979.50

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Solution

The fourth proportional to 66,787.50, 92,166.76 and 36,979.50 is: 51,031.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,787.50 : 92,166.76 = 36,979.50 : x
  2. Step 2: Convert to fraction form
    66,787.50/92,166.76 = 36,979.50/x
  3. Step 3: Cross multiply
    66,787.50x = 92,166.76 × 36,979.50
  4. Step 4: Simplify right side
    66,787.50x = 3,408,280,701.42
  5. Step 5: Solve for x
    x = 3,408,280,701.42/66,787.50
  6. Step 6: Final answer
    x = 51,031.72

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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.