Home / 47,149.55-70,722.19-13,870.70

Finding the Fourth Proportional to 47,149.55, 70,722.19 and 13,870.70

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Solution

The fourth proportional to 47,149.55, 70,722.19 and 13,870.70 is: 20,805.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,149.55 : 70,722.19 = 13,870.70 : x
  2. Step 2: Convert to fraction form
    47,149.55/70,722.19 = 13,870.70/x
  3. Step 3: Cross multiply
    47,149.55x = 70,722.19 × 13,870.70
  4. Step 4: Simplify right side
    47,149.55x = 980,965,892.55
  5. Step 5: Solve for x
    x = 980,965,892.55/47,149.55
  6. Step 6: Final answer
    x = 20,805.42

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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.