Home / 45,968.48-68,917.62-20,991.19

Finding the Fourth Proportional to 45,968.48, 68,917.62 and 20,991.19

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Solution

The fourth proportional to 45,968.48, 68,917.62 and 20,991.19 is: 31,470.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,968.48 : 68,917.62 = 20,991.19 : x
  2. Step 2: Convert to fraction form
    45,968.48/68,917.62 = 20,991.19/x
  3. Step 3: Cross multiply
    45,968.48x = 68,917.62 × 20,991.19
  4. Step 4: Simplify right side
    45,968.48x = 1,446,662,855.77
  5. Step 5: Solve for x
    x = 1,446,662,855.77/45,968.48
  6. Step 6: Final answer
    x = 31,470.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.