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Finding the Fourth Proportional to 72,173.64, 108,260.60 and 27,821.28

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Solution

The fourth proportional to 72,173.64, 108,260.60 and 27,821.28 is: 41,731.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,173.64 : 108,260.60 = 27,821.28 : x
  2. Step 2: Convert to fraction form
    72,173.64/108,260.60 = 27,821.28/x
  3. Step 3: Cross multiply
    72,173.64x = 108,260.60 × 27,821.28
  4. Step 4: Simplify right side
    72,173.64x = 3,011,948,465.57
  5. Step 5: Solve for x
    x = 3,011,948,465.57/72,173.64
  6. Step 6: Final answer
    x = 41,731.97

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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.