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Finding the Fourth Proportional to 47,530.80, 71,296.20 and 45,343.80

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Solution

The fourth proportional to 47,530.80, 71,296.20 and 45,343.80 is: 68,015.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,530.80 : 71,296.20 = 45,343.80 : x
  2. Step 2: Convert to fraction form
    47,530.80/71,296.20 = 45,343.80/x
  3. Step 3: Cross multiply
    47,530.80x = 71,296.20 × 45,343.80
  4. Step 4: Simplify right side
    47,530.80x = 3,232,840,633.56
  5. Step 5: Solve for x
    x = 3,232,840,633.56/47,530.80
  6. Step 6: Final answer
    x = 68,015.70

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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.