Home / 81,138.58-111,969.01-44,343.32

Finding the Fourth Proportional to 81,138.58, 111,969.01 and 44,343.32

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Solution

The fourth proportional to 81,138.58, 111,969.01 and 44,343.32 is: 61,192.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,138.58 : 111,969.01 = 44,343.32 : x
  2. Step 2: Convert to fraction form
    81,138.58/111,969.01 = 44,343.32/x
  3. Step 3: Cross multiply
    81,138.58x = 111,969.01 × 44,343.32
  4. Step 4: Simplify right side
    81,138.58x = 4,965,077,136.10
  5. Step 5: Solve for x
    x = 4,965,077,136.10/81,138.58
  6. Step 6: Final answer
    x = 61,192.56

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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.