Home / 47,148.96-70,712.49-13,860.12

Finding the Fourth Proportional to 47,148.96, 70,712.49 and 13,860.12

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Solution

The fourth proportional to 47,148.96, 70,712.49 and 13,860.12 is: 20,786.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,148.96 : 70,712.49 = 13,860.12 : x
  2. Step 2: Convert to fraction form
    47,148.96/70,712.49 = 13,860.12/x
  3. Step 3: Cross multiply
    47,148.96x = 70,712.49 × 13,860.12
  4. Step 4: Simplify right side
    47,148.96x = 980,083,596.90
  5. Step 5: Solve for x
    x = 980,083,596.90/47,148.96
  6. Step 6: Final answer
    x = 20,786.96

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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.