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Finding the Fourth Proportional to 73,286.20, 109,929.30 and 54,854.20

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Solution

The fourth proportional to 73,286.20, 109,929.30 and 54,854.20 is: 82,281.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,286.20 : 109,929.30 = 54,854.20 : x
  2. Step 2: Convert to fraction form
    73,286.20/109,929.30 = 54,854.20/x
  3. Step 3: Cross multiply
    73,286.20x = 109,929.30 × 54,854.20
  4. Step 4: Simplify right side
    73,286.20x = 6,030,083,808.06
  5. Step 5: Solve for x
    x = 6,030,083,808.06/73,286.20
  6. Step 6: Final answer
    x = 82,281.30

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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.