Home / 66,190.72-91,356.48-39,328.06

Finding the Fourth Proportional to 66,190.72, 91,356.48 and 39,328.06

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Solution

The fourth proportional to 66,190.72, 91,356.48 and 39,328.06 is: 54,280.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,190.72 : 91,356.48 = 39,328.06 : x
  2. Step 2: Convert to fraction form
    66,190.72/91,356.48 = 39,328.06/x
  3. Step 3: Cross multiply
    66,190.72x = 91,356.48 × 39,328.06
  4. Step 4: Simplify right side
    66,190.72x = 3,592,873,453.54
  5. Step 5: Solve for x
    x = 3,592,873,453.54/66,190.72
  6. Step 6: Final answer
    x = 54,280.62

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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.