Home / 80,948.24-121,406.52-21,784.40

Finding the Fourth Proportional to 80,948.24, 121,406.52 and 21,784.40

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Solution

The fourth proportional to 80,948.24, 121,406.52 and 21,784.40 is: 32,672.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,948.24 : 121,406.52 = 21,784.40 : x
  2. Step 2: Convert to fraction form
    80,948.24/121,406.52 = 21,784.40/x
  3. Step 3: Cross multiply
    80,948.24x = 121,406.52 × 21,784.40
  4. Step 4: Simplify right side
    80,948.24x = 2,644,768,194.29
  5. Step 5: Solve for x
    x = 2,644,768,194.29/80,948.24
  6. Step 6: Final answer
    x = 32,672.34

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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.