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Finding the Fourth Proportional to 70,730.74, 106,081.26 and 20,797.48

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Solution

The fourth proportional to 70,730.74, 106,081.26 and 20,797.48 is: 31,191.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,730.74 : 106,081.26 = 20,797.48 : x
  2. Step 2: Convert to fraction form
    70,730.74/106,081.26 = 20,797.48/x
  3. Step 3: Cross multiply
    70,730.74x = 106,081.26 × 20,797.48
  4. Step 4: Simplify right side
    70,730.74x = 2,206,222,883.22
  5. Step 5: Solve for x
    x = 2,206,222,883.22/70,730.74
  6. Step 6: Final answer
    x = 31,191.85

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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.