Home / 81,789.36-112,873.32-45,990.60

Finding the Fourth Proportional to 81,789.36, 112,873.32 and 45,990.60

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Solution

The fourth proportional to 81,789.36, 112,873.32 and 45,990.60 is: 63,469.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,789.36 : 112,873.32 = 45,990.60 : x
  2. Step 2: Convert to fraction form
    81,789.36/112,873.32 = 45,990.60/x
  3. Step 3: Cross multiply
    81,789.36x = 112,873.32 × 45,990.60
  4. Step 4: Simplify right side
    81,789.36x = 5,191,111,710.79
  5. Step 5: Solve for x
    x = 5,191,111,710.79/81,789.36
  6. Step 6: Final answer
    x = 63,469.28

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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.