Home / 81,656.06-112,697.75-49,843.45

Finding the Fourth Proportional to 81,656.06, 112,697.75 and 49,843.45

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Solution

The fourth proportional to 81,656.06, 112,697.75 and 49,843.45 is: 68,791.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,656.06 : 112,697.75 = 49,843.45 : x
  2. Step 2: Convert to fraction form
    81,656.06/112,697.75 = 49,843.45/x
  3. Step 3: Cross multiply
    81,656.06x = 112,697.75 × 49,843.45
  4. Step 4: Simplify right side
    81,656.06x = 5,617,243,854.53
  5. Step 5: Solve for x
    x = 5,617,243,854.53/81,656.06
  6. Step 6: Final answer
    x = 68,791.51

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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.