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Finding the Fourth Proportional to 47,206.80, 70,793.88 and 20,929.92

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Solution

The fourth proportional to 47,206.80, 70,793.88 and 20,929.92 is: 31,387.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,206.80 : 70,793.88 = 20,929.92 : x
  2. Step 2: Convert to fraction form
    47,206.80/70,793.88 = 20,929.92/x
  3. Step 3: Cross multiply
    47,206.80x = 70,793.88 × 20,929.92
  4. Step 4: Simplify right side
    47,206.80x = 1,481,710,244.89
  5. Step 5: Solve for x
    x = 1,481,710,244.89/47,206.80
  6. Step 6: Final answer
    x = 31,387.64

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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.