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Finding the Fourth Proportional to 70,843.55, 106,276.83 and 20,928.67

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Solution

The fourth proportional to 70,843.55, 106,276.83 and 20,928.67 is: 31,396.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,843.55 : 106,276.83 = 20,928.67 : x
  2. Step 2: Convert to fraction form
    70,843.55/106,276.83 = 20,928.67/x
  3. Step 3: Cross multiply
    70,843.55x = 106,276.83 × 20,928.67
  4. Step 4: Simplify right side
    70,843.55x = 2,224,232,703.72
  5. Step 5: Solve for x
    x = 2,224,232,703.72/70,843.55
  6. Step 6: Final answer
    x = 31,396.40

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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.