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Finding the Fourth Proportional to 72,179.19, 108,268.88 and 19,588.68

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Solution

The fourth proportional to 72,179.19, 108,268.88 and 19,588.68 is: 29,383.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,179.19 : 108,268.88 = 19,588.68 : x
  2. Step 2: Convert to fraction form
    72,179.19/108,268.88 = 19,588.68/x
  3. Step 3: Cross multiply
    72,179.19x = 108,268.88 × 19,588.68
  4. Step 4: Simplify right side
    72,179.19x = 2,120,844,346.34
  5. Step 5: Solve for x
    x = 2,120,844,346.34/72,179.19
  6. Step 6: Final answer
    x = 29,383.04

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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.