Home / 80,921.73-121,394.90-21,762.02

Finding the Fourth Proportional to 80,921.73, 121,394.90 and 21,762.02

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Solution

The fourth proportional to 80,921.73, 121,394.90 and 21,762.02 is: 32,646.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,921.73 : 121,394.90 = 21,762.02 : x
  2. Step 2: Convert to fraction form
    80,921.73/121,394.90 = 21,762.02/x
  3. Step 3: Cross multiply
    80,921.73x = 121,394.90 × 21,762.02
  4. Step 4: Simplify right side
    80,921.73x = 2,641,797,916.74
  5. Step 5: Solve for x
    x = 2,641,797,916.74/80,921.73
  6. Step 6: Final answer
    x = 32,646.33

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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.