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Finding the Fourth Proportional to 66,963.62, 92,403.06 and 40,105.42

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Solution

The fourth proportional to 66,963.62, 92,403.06 and 40,105.42 is: 55,341.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,963.62 : 92,403.06 = 40,105.42 : x
  2. Step 2: Convert to fraction form
    66,963.62/92,403.06 = 40,105.42/x
  3. Step 3: Cross multiply
    66,963.62x = 92,403.06 × 40,105.42
  4. Step 4: Simplify right side
    66,963.62x = 3,705,863,530.59
  5. Step 5: Solve for x
    x = 3,705,863,530.59/66,963.62
  6. Step 6: Final answer
    x = 55,341.45

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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.