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Finding the Fourth Proportional to 66,920.45, 100,395.95 and 38,863.94

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Solution

The fourth proportional to 66,920.45, 100,395.95 and 38,863.94 is: 58,304.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,920.45 : 100,395.95 = 38,863.94 : x
  2. Step 2: Convert to fraction form
    66,920.45/100,395.95 = 38,863.94/x
  3. Step 3: Cross multiply
    66,920.45x = 100,395.95 × 38,863.94
  4. Step 4: Simplify right side
    66,920.45x = 3,901,781,480.74
  5. Step 5: Solve for x
    x = 3,901,781,480.74/66,920.45
  6. Step 6: Final answer
    x = 58,304.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.