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Finding the Fourth Proportional to 47,719.20, 71,611.20 and 26,659.20

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Solution

The fourth proportional to 47,719.20, 71,611.20 and 26,659.20 is: 40,006.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,719.20 : 71,611.20 = 26,659.20 : x
  2. Step 2: Convert to fraction form
    47,719.20/71,611.20 = 26,659.20/x
  3. Step 3: Cross multiply
    47,719.20x = 71,611.20 × 26,659.20
  4. Step 4: Simplify right side
    47,719.20x = 1,909,097,303.04
  5. Step 5: Solve for x
    x = 1,909,097,303.04/47,719.20
  6. Step 6: Final answer
    x = 40,006.90

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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.