Home / 66,348.20-91,568.08-39,490.80

Finding the Fourth Proportional to 66,348.20, 91,568.08 and 39,490.80

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Solution

The fourth proportional to 66,348.20, 91,568.08 and 39,490.80 is: 54,501.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,348.20 : 91,568.08 = 39,490.80 : x
  2. Step 2: Convert to fraction form
    66,348.20/91,568.08 = 39,490.80/x
  3. Step 3: Cross multiply
    66,348.20x = 91,568.08 × 39,490.80
  4. Step 4: Simplify right side
    66,348.20x = 3,616,096,733.66
  5. Step 5: Solve for x
    x = 3,616,096,733.66/66,348.20
  6. Step 6: Final answer
    x = 54,501.81

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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.