Home / 81,743.36-112,763.48-54,893.48

Finding the Fourth Proportional to 81,743.36, 112,763.48 and 54,893.48

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Solution

The fourth proportional to 81,743.36, 112,763.48 and 54,893.48 is: 75,724.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,743.36 : 112,763.48 = 54,893.48 : x
  2. Step 2: Convert to fraction form
    81,743.36/112,763.48 = 54,893.48/x
  3. Step 3: Cross multiply
    81,743.36x = 112,763.48 × 54,893.48
  4. Step 4: Simplify right side
    81,743.36x = 6,189,979,834.11
  5. Step 5: Solve for x
    x = 6,189,979,834.11/81,743.36
  6. Step 6: Final answer
    x = 75,724.56

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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.