Home / 66,171.94-91,280.30-40,660.58

Finding the Fourth Proportional to 66,171.94, 91,280.30 and 40,660.58

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Solution

The fourth proportional to 66,171.94, 91,280.30 and 40,660.58 is: 56,088.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,171.94 : 91,280.30 = 40,660.58 : x
  2. Step 2: Convert to fraction form
    66,171.94/91,280.30 = 40,660.58/x
  3. Step 3: Cross multiply
    66,171.94x = 91,280.30 × 40,660.58
  4. Step 4: Simplify right side
    66,171.94x = 3,711,509,940.57
  5. Step 5: Solve for x
    x = 3,711,509,940.57/66,171.94
  6. Step 6: Final answer
    x = 56,088.88

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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.