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Finding the Fourth Proportional to 47,011.80, 70,517.70 and 43,731.30

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Solution

The fourth proportional to 47,011.80, 70,517.70 and 43,731.30 is: 65,596.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,011.80 : 70,517.70 = 43,731.30 : x
  2. Step 2: Convert to fraction form
    47,011.80/70,517.70 = 43,731.30/x
  3. Step 3: Cross multiply
    47,011.80x = 70,517.70 × 43,731.30
  4. Step 4: Simplify right side
    47,011.80x = 3,083,830,694.01
  5. Step 5: Solve for x
    x = 3,083,830,694.01/47,011.80
  6. Step 6: Final answer
    x = 65,596.95

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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.