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Finding the Fourth Proportional to 47,682, 71,505.72 and 21,373.20

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Solution

The fourth proportional to 47,682, 71,505.72 and 21,373.20 is: 32,052.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,682 : 71,505.72 = 21,373.20 : x
  2. Step 2: Convert to fraction form
    47,682/71,505.72 = 21,373.20/x
  3. Step 3: Cross multiply
    47,682x = 71,505.72 × 21,373.20
  4. Step 4: Simplify right side
    47,682x = 1,528,306,054.70
  5. Step 5: Solve for x
    x = 1,528,306,054.70/47,682
  6. Step 6: Final answer
    x = 32,052.05

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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.