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Finding the Fourth Proportional to 72,410.10, 108,615.15 and 54,914.10

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Solution

The fourth proportional to 72,410.10, 108,615.15 and 54,914.10 is: 82,371.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,410.10 : 108,615.15 = 54,914.10 : x
  2. Step 2: Convert to fraction form
    72,410.10/108,615.15 = 54,914.10/x
  3. Step 3: Cross multiply
    72,410.10x = 108,615.15 × 54,914.10
  4. Step 4: Simplify right side
    72,410.10x = 5,964,503,208.62
  5. Step 5: Solve for x
    x = 5,964,503,208.62/72,410.10
  6. Step 6: Final answer
    x = 82,371.15

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Similar ratio
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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.