Home / 66,384.40-91,609.36-36,170.08

Finding the Fourth Proportional to 66,384.40, 91,609.36 and 36,170.08

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Solution

The fourth proportional to 66,384.40, 91,609.36 and 36,170.08 is: 49,914.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,384.40 : 91,609.36 = 36,170.08 : x
  2. Step 2: Convert to fraction form
    66,384.40/91,609.36 = 36,170.08/x
  3. Step 3: Cross multiply
    66,384.40x = 91,609.36 × 36,170.08
  4. Step 4: Simplify right side
    66,384.40x = 3,313,517,879.95
  5. Step 5: Solve for x
    x = 3,313,517,879.95/66,384.40
  6. Step 6: Final answer
    x = 49,914.10

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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.