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Finding the Fourth Proportional to 72,007.91, 107,965.61 and 29,917.07

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Solution

The fourth proportional to 72,007.91, 107,965.61 and 29,917.07 is: 44,856.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,007.91 : 107,965.61 = 29,917.07 : x
  2. Step 2: Convert to fraction form
    72,007.91/107,965.61 = 29,917.07/x
  3. Step 3: Cross multiply
    72,007.91x = 107,965.61 × 29,917.07
  4. Step 4: Simplify right side
    72,007.91x = 3,230,014,651.80
  5. Step 5: Solve for x
    x = 3,230,014,651.80/72,007.91
  6. Step 6: Final answer
    x = 44,856.39

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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.