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Finding the Fourth Proportional to 70,944.05, 106,406.04 and 21,029.42

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Solution

The fourth proportional to 70,944.05, 106,406.04 and 21,029.42 is: 31,541.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,944.05 : 106,406.04 = 21,029.42 : x
  2. Step 2: Convert to fraction form
    70,944.05/106,406.04 = 21,029.42/x
  3. Step 3: Cross multiply
    70,944.05x = 106,406.04 × 21,029.42
  4. Step 4: Simplify right side
    70,944.05x = 2,237,657,305.70
  5. Step 5: Solve for x
    x = 2,237,657,305.70/70,944.05
  6. Step 6: Final answer
    x = 31,541.16

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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.