Home / 66,261.12-91,410.23-39,388.37

Finding the Fourth Proportional to 66,261.12, 91,410.23 and 39,388.37

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Solution

The fourth proportional to 66,261.12, 91,410.23 and 39,388.37 is: 54,338.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,261.12 : 91,410.23 = 39,388.37 : x
  2. Step 2: Convert to fraction form
    66,261.12/91,410.23 = 39,388.37/x
  3. Step 3: Cross multiply
    66,261.12x = 91,410.23 × 39,388.37
  4. Step 4: Simplify right side
    66,261.12x = 3,600,499,307.03
  5. Step 5: Solve for x
    x = 3,600,499,307.03/66,261.12
  6. Step 6: Final answer
    x = 54,338.04

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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.