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Finding the Fourth Proportional to 47,270.88, 70,919.50 and 20,619.25

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Solution

The fourth proportional to 47,270.88, 70,919.50 and 20,619.25 is: 30,934.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,270.88 : 70,919.50 = 20,619.25 : x
  2. Step 2: Convert to fraction form
    47,270.88/70,919.50 = 20,619.25/x
  3. Step 3: Cross multiply
    47,270.88x = 70,919.50 × 20,619.25
  4. Step 4: Simplify right side
    47,270.88x = 1,462,306,671.53
  5. Step 5: Solve for x
    x = 1,462,306,671.53/47,270.88
  6. Step 6: Final answer
    x = 30,934.62

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1.5x scale

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.