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Finding the Fourth Proportional to 47,725.70, 71,617.80 and 19,659.20

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Solution

The fourth proportional to 47,725.70, 71,617.80 and 19,659.20 is: 29,500.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,725.70 : 71,617.80 = 19,659.20 : x
  2. Step 2: Convert to fraction form
    47,725.70/71,617.80 = 19,659.20/x
  3. Step 3: Cross multiply
    47,725.70x = 71,617.80 × 19,659.20
  4. Step 4: Simplify right side
    47,725.70x = 1,407,948,653.76
  5. Step 5: Solve for x
    x = 1,407,948,653.76/47,725.70
  6. Step 6: Final answer
    x = 29,500.85

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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.