Home / 47,187.23-70,830-20,910.42

Finding the Fourth Proportional to 47,187.23, 70,830 and 20,910.42

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Solution

The fourth proportional to 47,187.23, 70,830 and 20,910.42 is: 31,387.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,187.23 : 70,830 = 20,910.42 : x
  2. Step 2: Convert to fraction form
    47,187.23/70,830 = 20,910.42/x
  3. Step 3: Cross multiply
    47,187.23x = 70,830 × 20,910.42
  4. Step 4: Simplify right side
    47,187.23x = 1,481,085,048.60
  5. Step 5: Solve for x
    x = 1,481,085,048.60/47,187.23
  6. Step 6: Final answer
    x = 31,387.42

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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.