Home / 47,221.23-70,844.11-20,919.72

Finding the Fourth Proportional to 47,221.23, 70,844.11 and 20,919.72

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Solution

The fourth proportional to 47,221.23, 70,844.11 and 20,919.72 is: 31,385.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,221.23 : 70,844.11 = 20,919.72 : x
  2. Step 2: Convert to fraction form
    47,221.23/70,844.11 = 20,919.72/x
  3. Step 3: Cross multiply
    47,221.23x = 70,844.11 × 20,919.72
  4. Step 4: Simplify right side
    47,221.23x = 1,482,039,158.22
  5. Step 5: Solve for x
    x = 1,482,039,158.22/47,221.23
  6. Step 6: Final answer
    x = 31,385.02

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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.