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Finding the Fourth Proportional to 70,939.96, 106,425.72 and 30,965.32

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Solution

The fourth proportional to 70,939.96, 106,425.72 and 30,965.32 is: 46,454.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,939.96 : 106,425.72 = 30,965.32 : x
  2. Step 2: Convert to fraction form
    70,939.96/106,425.72 = 30,965.32/x
  3. Step 3: Cross multiply
    70,939.96x = 106,425.72 × 30,965.32
  4. Step 4: Simplify right side
    70,939.96x = 3,295,506,476.03
  5. Step 5: Solve for x
    x = 3,295,506,476.03/70,939.96
  6. Step 6: Final answer
    x = 46,454.87

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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.