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Finding the Fourth Proportional to 72,659.64, 108,949.94 and 22,718.20

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Solution

The fourth proportional to 72,659.64, 108,949.94 and 22,718.20 is: 34,064.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,659.64 : 108,949.94 = 22,718.20 : x
  2. Step 2: Convert to fraction form
    72,659.64/108,949.94 = 22,718.20/x
  3. Step 3: Cross multiply
    72,659.64x = 108,949.94 × 22,718.20
  4. Step 4: Simplify right side
    72,659.64x = 2,475,146,526.91
  5. Step 5: Solve for x
    x = 2,475,146,526.91/72,659.64
  6. Step 6: Final answer
    x = 34,064.94

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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.