Home / 55,790.40-83,685.60-20,722.80

Finding the Fourth Proportional to 55,790.40, 83,685.60 and 20,722.80

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Solution

The fourth proportional to 55,790.40, 83,685.60 and 20,722.80 is: 31,084.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,790.40 : 83,685.60 = 20,722.80 : x
  2. Step 2: Convert to fraction form
    55,790.40/83,685.60 = 20,722.80/x
  3. Step 3: Cross multiply
    55,790.40x = 83,685.60 × 20,722.80
  4. Step 4: Simplify right side
    55,790.40x = 1,734,199,951.68
  5. Step 5: Solve for x
    x = 1,734,199,951.68/55,790.40
  6. Step 6: Final answer
    x = 31,084.20

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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.