Home / 47,221.38-70,856.64-20,919.94

Finding the Fourth Proportional to 47,221.38, 70,856.64 and 20,919.94

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Solution

The fourth proportional to 47,221.38, 70,856.64 and 20,919.94 is: 31,390.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,221.38 : 70,856.64 = 20,919.94 : x
  2. Step 2: Convert to fraction form
    47,221.38/70,856.64 = 20,919.94/x
  3. Step 3: Cross multiply
    47,221.38x = 70,856.64 × 20,919.94
  4. Step 4: Simplify right side
    47,221.38x = 1,482,316,480.26
  5. Step 5: Solve for x
    x = 1,482,316,480.26/47,221.38
  6. Step 6: Final answer
    x = 31,390.79

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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.