Home / 82,215.76-123,323.64-19,886.26

Finding the Fourth Proportional to 82,215.76, 123,323.64 and 19,886.26

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Solution

The fourth proportional to 82,215.76, 123,323.64 and 19,886.26 is: 29,829.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,215.76 : 123,323.64 = 19,886.26 : x
  2. Step 2: Convert to fraction form
    82,215.76/123,323.64 = 19,886.26/x
  3. Step 3: Cross multiply
    82,215.76x = 123,323.64 × 19,886.26
  4. Step 4: Simplify right side
    82,215.76x = 2,452,445,969.19
  5. Step 5: Solve for x
    x = 2,452,445,969.19/82,215.76
  6. Step 6: Final answer
    x = 29,829.39

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Similar ratio
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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.