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Finding the Fourth Proportional to 72,201.92, 108,091.73 and 42,124.19

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Solution

The fourth proportional to 72,201.92, 108,091.73 and 42,124.19 is: 63,063.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,201.92 : 108,091.73 = 42,124.19 : x
  2. Step 2: Convert to fraction form
    72,201.92/108,091.73 = 42,124.19/x
  3. Step 3: Cross multiply
    72,201.92x = 108,091.73 × 42,124.19
  4. Step 4: Simplify right side
    72,201.92x = 4,553,276,136.80
  5. Step 5: Solve for x
    x = 4,553,276,136.80/72,201.92
  6. Step 6: Final answer
    x = 63,063.09

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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.