Home / 79,129.27-118,684.68-19,965.43

Finding the Fourth Proportional to 79,129.27, 118,684.68 and 19,965.43

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Solution

The fourth proportional to 79,129.27, 118,684.68 and 19,965.43 is: 29,945.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,129.27 : 118,684.68 = 19,965.43 : x
  2. Step 2: Convert to fraction form
    79,129.27/118,684.68 = 19,965.43/x
  3. Step 3: Cross multiply
    79,129.27x = 118,684.68 × 19,965.43
  4. Step 4: Simplify right side
    79,129.27x = 2,369,590,670.61
  5. Step 5: Solve for x
    x = 2,369,590,670.61/79,129.27
  6. Step 6: Final answer
    x = 29,945.82

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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.