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Finding the Fourth Proportional to 70,909.38, 106,263.81 and 39,333.38

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Solution

The fourth proportional to 70,909.38, 106,263.81 and 39,333.38 is: 58,944.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,909.38 : 106,263.81 = 39,333.38 : x
  2. Step 2: Convert to fraction form
    70,909.38/106,263.81 = 39,333.38/x
  3. Step 3: Cross multiply
    70,909.38x = 106,263.81 × 39,333.38
  4. Step 4: Simplify right side
    70,909.38x = 4,179,714,287.66
  5. Step 5: Solve for x
    x = 4,179,714,287.66/70,909.38
  6. Step 6: Final answer
    x = 58,944.45

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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.