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Finding the Fourth Proportional to 70,877.34, 106,336.77 and 20,958.73

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Solution

The fourth proportional to 70,877.34, 106,336.77 and 20,958.73 is: 31,444.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,877.34 : 106,336.77 = 20,958.73 : x
  2. Step 2: Convert to fraction form
    70,877.34/106,336.77 = 20,958.73/x
  3. Step 3: Cross multiply
    70,877.34x = 106,336.77 × 20,958.73
  4. Step 4: Simplify right side
    70,877.34x = 2,228,683,651.50
  5. Step 5: Solve for x
    x = 2,228,683,651.50/70,877.34
  6. Step 6: Final answer
    x = 31,444.23

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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.