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Finding the Fourth Proportional to 66,843.76, 92,366.04 and 63,604.72

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Solution

The fourth proportional to 66,843.76, 92,366.04 and 63,604.72 is: 87,890.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,843.76 : 92,366.04 = 63,604.72 : x
  2. Step 2: Convert to fraction form
    66,843.76/92,366.04 = 63,604.72/x
  3. Step 3: Cross multiply
    66,843.76x = 92,366.04 × 63,604.72
  4. Step 4: Simplify right side
    66,843.76x = 5,874,916,111.71
  5. Step 5: Solve for x
    x = 5,874,916,111.71/66,843.76
  6. Step 6: Final answer
    x = 87,890.27

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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.