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Finding the Fourth Proportional to 72,718.22, 109,078.68 and 22,797.20

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Solution

The fourth proportional to 72,718.22, 109,078.68 and 22,797.20 is: 34,196.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,718.22 : 109,078.68 = 22,797.20 : x
  2. Step 2: Convert to fraction form
    72,718.22/109,078.68 = 22,797.20/x
  3. Step 3: Cross multiply
    72,718.22x = 109,078.68 × 22,797.20
  4. Step 4: Simplify right side
    72,718.22x = 2,486,688,483.70
  5. Step 5: Solve for x
    x = 2,486,688,483.70/72,718.22
  6. Step 6: Final answer
    x = 34,196.22

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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.