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Finding the Fourth Proportional to 70,936.46, 106,420.26 and 21,020.46

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Solution

The fourth proportional to 70,936.46, 106,420.26 and 21,020.46 is: 31,535.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,936.46 : 106,420.26 = 21,020.46 : x
  2. Step 2: Convert to fraction form
    70,936.46/106,420.26 = 21,020.46/x
  3. Step 3: Cross multiply
    70,936.46x = 106,420.26 × 21,020.46
  4. Step 4: Simplify right side
    70,936.46x = 2,237,002,919.52
  5. Step 5: Solve for x
    x = 2,237,002,919.52/70,936.46
  6. Step 6: Final answer
    x = 31,535.31

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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.