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Finding the Fourth Proportional to 70,798.20, 106,188.19 and 20,883.57

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Solution

The fourth proportional to 70,798.20, 106,188.19 and 20,883.57 is: 31,322.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,798.20 : 106,188.19 = 20,883.57 : x
  2. Step 2: Convert to fraction form
    70,798.20/106,188.19 = 20,883.57/x
  3. Step 3: Cross multiply
    70,798.20x = 106,188.19 × 20,883.57
  4. Step 4: Simplify right side
    70,798.20x = 2,217,588,704.67
  5. Step 5: Solve for x
    x = 2,217,588,704.67/70,798.20
  6. Step 6: Final answer
    x = 31,322.67

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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.