Home / 72,416.16-108,623.97-19,829.61

Finding the Fourth Proportional to 72,416.16, 108,623.97 and 19,829.61

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Solution

The fourth proportional to 72,416.16, 108,623.97 and 19,829.61 is: 29,744.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,416.16 : 108,623.97 = 19,829.61 : x
  2. Step 2: Convert to fraction form
    72,416.16/108,623.97 = 19,829.61/x
  3. Step 3: Cross multiply
    72,416.16x = 108,623.97 × 19,829.61
  4. Step 4: Simplify right side
    72,416.16x = 2,153,970,961.75
  5. Step 5: Solve for x
    x = 2,153,970,961.75/72,416.16
  6. Step 6: Final answer
    x = 29,744.34

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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.