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Finding the Fourth Proportional to 47,881.76, 71,853.62 and 21,584.90

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Solution

The fourth proportional to 47,881.76, 71,853.62 and 21,584.90 is: 32,391.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,881.76 : 71,853.62 = 21,584.90 : x
  2. Step 2: Convert to fraction form
    47,881.76/71,853.62 = 21,584.90/x
  3. Step 3: Cross multiply
    47,881.76x = 71,853.62 × 21,584.90
  4. Step 4: Simplify right side
    47,881.76x = 1,550,953,274.05
  5. Step 5: Solve for x
    x = 1,550,953,274.05/47,881.76
  6. Step 6: Final answer
    x = 32,391.32

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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.