Home / 80,906.38-121,359.47-21,742.02

Finding the Fourth Proportional to 80,906.38, 121,359.47 and 21,742.02

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Solution

The fourth proportional to 80,906.38, 121,359.47 and 21,742.02 is: 32,613.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,906.38 : 121,359.47 = 21,742.02 : x
  2. Step 2: Convert to fraction form
    80,906.38/121,359.47 = 21,742.02/x
  3. Step 3: Cross multiply
    80,906.38x = 121,359.47 × 21,742.02
  4. Step 4: Simplify right side
    80,906.38x = 2,638,599,915.22
  5. Step 5: Solve for x
    x = 2,638,599,915.22/80,906.38
  6. Step 6: Final answer
    x = 32,613.00

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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.