Home / 72,173.28-108,265.68-19,587.36

Finding the Fourth Proportional to 72,173.28, 108,265.68 and 19,587.36

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Solution

The fourth proportional to 72,173.28, 108,265.68 and 19,587.36 is: 29,382.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,173.28 : 108,265.68 = 19,587.36 : x
  2. Step 2: Convert to fraction form
    72,173.28/108,265.68 = 19,587.36/x
  3. Step 3: Cross multiply
    72,173.28x = 108,265.68 × 19,587.36
  4. Step 4: Simplify right side
    72,173.28x = 2,120,638,849.80
  5. Step 5: Solve for x
    x = 2,120,638,849.80/72,173.28
  6. Step 6: Final answer
    x = 29,382.60

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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.