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Finding the Fourth Proportional to 73,171.08, 100,976.40 and 39,637.08

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Solution

The fourth proportional to 73,171.08, 100,976.40 and 39,637.08 is: 54,699.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,171.08 : 100,976.40 = 39,637.08 : x
  2. Step 2: Convert to fraction form
    73,171.08/100,976.40 = 39,637.08/x
  3. Step 3: Cross multiply
    73,171.08x = 100,976.40 × 39,637.08
  4. Step 4: Simplify right side
    73,171.08x = 4,002,409,644.91
  5. Step 5: Solve for x
    x = 4,002,409,644.91/73,171.08
  6. Step 6: Final answer
    x = 54,699.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.