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Finding the Fourth Proportional to 47,375.60, 70,969.80 and 30,747.20

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Solution

The fourth proportional to 47,375.60, 70,969.80 and 30,747.20 is: 46,060.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,375.60 : 70,969.80 = 30,747.20 : x
  2. Step 2: Convert to fraction form
    47,375.60/70,969.80 = 30,747.20/x
  3. Step 3: Cross multiply
    47,375.60x = 70,969.80 × 30,747.20
  4. Step 4: Simplify right side
    47,375.60x = 2,182,122,634.56
  5. Step 5: Solve for x
    x = 2,182,122,634.56/47,375.60
  6. Step 6: Final answer
    x = 46,060.05

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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.