Home / 55,829.40-83,744.10-20,761.80

Finding the Fourth Proportional to 55,829.40, 83,744.10 and 20,761.80

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Solution

The fourth proportional to 55,829.40, 83,744.10 and 20,761.80 is: 31,142.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,829.40 : 83,744.10 = 20,761.80 : x
  2. Step 2: Convert to fraction form
    55,829.40/83,744.10 = 20,761.80/x
  3. Step 3: Cross multiply
    55,829.40x = 83,744.10 × 20,761.80
  4. Step 4: Simplify right side
    55,829.40x = 1,738,678,255.38
  5. Step 5: Solve for x
    x = 1,738,678,255.38/55,829.40
  6. Step 6: Final answer
    x = 31,142.70

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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.