Home / 82,275.22-123,412.83-19,945.72

Finding the Fourth Proportional to 82,275.22, 123,412.83 and 19,945.72

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Solution

The fourth proportional to 82,275.22, 123,412.83 and 19,945.72 is: 29,918.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,275.22 : 123,412.83 = 19,945.72 : x
  2. Step 2: Convert to fraction form
    82,275.22/123,412.83 = 19,945.72/x
  3. Step 3: Cross multiply
    82,275.22x = 123,412.83 × 19,945.72
  4. Step 4: Simplify right side
    82,275.22x = 2,461,557,751.59
  5. Step 5: Solve for x
    x = 2,461,557,751.59/82,275.22
  6. Step 6: Final answer
    x = 29,918.58

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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.