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Finding the Fourth Proportional to 47,653.20, 71,431.20 and 27,921.60

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Solution

The fourth proportional to 47,653.20, 71,431.20 and 27,921.60 is: 41,853.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,653.20 : 71,431.20 = 27,921.60 : x
  2. Step 2: Convert to fraction form
    47,653.20/71,431.20 = 27,921.60/x
  3. Step 3: Cross multiply
    47,653.20x = 71,431.20 × 27,921.60
  4. Step 4: Simplify right side
    47,653.20x = 1,994,473,393.92
  5. Step 5: Solve for x
    x = 1,994,473,393.92/47,653.20
  6. Step 6: Final answer
    x = 41,853.92

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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.