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Finding the Fourth Proportional to 70,841.55, 106,273.83 and 20,926.67

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Solution

The fourth proportional to 70,841.55, 106,273.83 and 20,926.67 is: 31,393.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,841.55 : 106,273.83 = 20,926.67 : x
  2. Step 2: Convert to fraction form
    70,841.55/106,273.83 = 20,926.67/x
  3. Step 3: Cross multiply
    70,841.55x = 106,273.83 × 20,926.67
  4. Step 4: Simplify right side
    70,841.55x = 2,223,957,370.05
  5. Step 5: Solve for x
    x = 2,223,957,370.05/70,841.55
  6. Step 6: Final answer
    x = 31,393.40

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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.