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Finding the Fourth Proportional to 66,667.52, 100,015.68 and 19,924.16

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Solution

The fourth proportional to 66,667.52, 100,015.68 and 19,924.16 is: 29,890.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,667.52 : 100,015.68 = 19,924.16 : x
  2. Step 2: Convert to fraction form
    66,667.52/100,015.68 = 19,924.16/x
  3. Step 3: Cross multiply
    66,667.52x = 100,015.68 × 19,924.16
  4. Step 4: Simplify right side
    66,667.52x = 1,992,728,410.83
  5. Step 5: Solve for x
    x = 1,992,728,410.83/66,667.52
  6. Step 6: Final answer
    x = 29,890.54

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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.