Home / 72,156.35-108,252.75-30,023.79

Finding the Fourth Proportional to 72,156.35, 108,252.75 and 30,023.79

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Solution

The fourth proportional to 72,156.35, 108,252.75 and 30,023.79 is: 45,043.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,156.35 : 108,252.75 = 30,023.79 : x
  2. Step 2: Convert to fraction form
    72,156.35/108,252.75 = 30,023.79/x
  3. Step 3: Cross multiply
    72,156.35x = 108,252.75 × 30,023.79
  4. Step 4: Simplify right side
    72,156.35x = 3,250,157,832.92
  5. Step 5: Solve for x
    x = 3,250,157,832.92/72,156.35
  6. Step 6: Final answer
    x = 45,043.27

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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.