Home / 55,158.13-82,720.70-20,089.59

Finding the Fourth Proportional to 55,158.13, 82,720.70 and 20,089.59

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Solution

The fourth proportional to 55,158.13, 82,720.70 and 20,089.59 is: 30,128.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,158.13 : 82,720.70 = 20,089.59 : x
  2. Step 2: Convert to fraction form
    55,158.13/82,720.70 = 20,089.59/x
  3. Step 3: Cross multiply
    55,158.13x = 82,720.70 × 20,089.59
  4. Step 4: Simplify right side
    55,158.13x = 1,661,824,584.13
  5. Step 5: Solve for x
    x = 1,661,824,584.13/55,158.13
  6. Step 6: Final answer
    x = 30,128.37

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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.