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Finding the Fourth Proportional to 70,816.33, 106,227.42 and 20,896.42

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Solution

The fourth proportional to 70,816.33, 106,227.42 and 20,896.42 is: 31,345.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,816.33 : 106,227.42 = 20,896.42 : x
  2. Step 2: Convert to fraction form
    70,816.33/106,227.42 = 20,896.42/x
  3. Step 3: Cross multiply
    70,816.33x = 106,227.42 × 20,896.42
  4. Step 4: Simplify right side
    70,816.33x = 2,219,772,679.35
  5. Step 5: Solve for x
    x = 2,219,772,679.35/70,816.33
  6. Step 6: Final answer
    x = 31,345.49

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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.