Home / 66,817.47-92,205.71-38,138.61

Finding the Fourth Proportional to 66,817.47, 92,205.71 and 38,138.61

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Solution

The fourth proportional to 66,817.47, 92,205.71 and 38,138.61 is: 52,629.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,817.47 : 92,205.71 = 38,138.61 : x
  2. Step 2: Convert to fraction form
    66,817.47/92,205.71 = 38,138.61/x
  3. Step 3: Cross multiply
    66,817.47x = 92,205.71 × 38,138.61
  4. Step 4: Simplify right side
    66,817.47x = 3,516,597,911.56
  5. Step 5: Solve for x
    x = 3,516,597,911.56/66,817.47
  6. Step 6: Final answer
    x = 52,629.91

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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.