Home / 81,789.60-112,881.60-45,982.56

Finding the Fourth Proportional to 81,789.60, 112,881.60 and 45,982.56

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Solution

The fourth proportional to 81,789.60, 112,881.60 and 45,982.56 is: 63,462.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,789.60 : 112,881.60 = 45,982.56 : x
  2. Step 2: Convert to fraction form
    81,789.60/112,881.60 = 45,982.56/x
  3. Step 3: Cross multiply
    81,789.60x = 112,881.60 × 45,982.56
  4. Step 4: Simplify right side
    81,789.60x = 5,190,584,944.90
  5. Step 5: Solve for x
    x = 5,190,584,944.90/81,789.60
  6. Step 6: Final answer
    x = 63,462.65

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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.