Home / 66,331.20-91,538.81-36,117.80

Finding the Fourth Proportional to 66,331.20, 91,538.81 and 36,117.80

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Solution

The fourth proportional to 66,331.20, 91,538.81 and 36,117.80 is: 49,843.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,331.20 : 91,538.81 = 36,117.80 : x
  2. Step 2: Convert to fraction form
    66,331.20/91,538.81 = 36,117.80/x
  3. Step 3: Cross multiply
    66,331.20x = 91,538.81 × 36,117.80
  4. Step 4: Simplify right side
    66,331.20x = 3,306,180,431.82
  5. Step 5: Solve for x
    x = 3,306,180,431.82/66,331.20
  6. Step 6: Final answer
    x = 49,843.52

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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.