Home / 47,289.52-70,909.32-20,982.80

Finding the Fourth Proportional to 47,289.52, 70,909.32 and 20,982.80

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Solution

The fourth proportional to 47,289.52, 70,909.32 and 20,982.80 is: 31,463.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,289.52 : 70,909.32 = 20,982.80 : x
  2. Step 2: Convert to fraction form
    47,289.52/70,909.32 = 20,982.80/x
  3. Step 3: Cross multiply
    47,289.52x = 70,909.32 × 20,982.80
  4. Step 4: Simplify right side
    47,289.52x = 1,487,876,079.70
  5. Step 5: Solve for x
    x = 1,487,876,079.70/47,289.52
  6. Step 6: Final answer
    x = 31,463.13

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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.