Home / 47,019.75-70,480-15,421.54

Finding the Fourth Proportional to 47,019.75, 70,480 and 15,421.54

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Solution

The fourth proportional to 47,019.75, 70,480 and 15,421.54 is: 23,116.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,019.75 : 70,480 = 15,421.54 : x
  2. Step 2: Convert to fraction form
    47,019.75/70,480 = 15,421.54/x
  3. Step 3: Cross multiply
    47,019.75x = 70,480 × 15,421.54
  4. Step 4: Simplify right side
    47,019.75x = 1,086,910,139.20
  5. Step 5: Solve for x
    x = 1,086,910,139.20/47,019.75
  6. Step 6: Final answer
    x = 23,116.03

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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.