Home / 55,131.40-82,718.70-21,845.80

Finding the Fourth Proportional to 55,131.40, 82,718.70 and 21,845.80

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Solution

The fourth proportional to 55,131.40, 82,718.70 and 21,845.80 is: 32,777.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,131.40 : 82,718.70 = 21,845.80 : x
  2. Step 2: Convert to fraction form
    55,131.40/82,718.70 = 21,845.80/x
  3. Step 3: Cross multiply
    55,131.40x = 82,718.70 × 21,845.80
  4. Step 4: Simplify right side
    55,131.40x = 1,807,056,176.46
  5. Step 5: Solve for x
    x = 1,807,056,176.46/55,131.40
  6. Step 6: Final answer
    x = 32,777.26

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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.