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Finding the Fourth Proportional to 66,772.63, 92,145.92 and 36,145.74

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Solution

The fourth proportional to 66,772.63, 92,145.92 and 36,145.74 is: 49,880.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,772.63 : 92,145.92 = 36,145.74 : x
  2. Step 2: Convert to fraction form
    66,772.63/92,145.92 = 36,145.74/x
  3. Step 3: Cross multiply
    66,772.63x = 92,145.92 × 36,145.74
  4. Step 4: Simplify right side
    66,772.63x = 3,330,682,285.65
  5. Step 5: Solve for x
    x = 3,330,682,285.65/66,772.63
  6. Step 6: Final answer
    x = 49,880.95

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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.