Home / 78,835.99-118,183.66-28,904.43

Finding the Fourth Proportional to 78,835.99, 118,183.66 and 28,904.43

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Solution

The fourth proportional to 78,835.99, 118,183.66 and 28,904.43 is: 43,330.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,835.99 : 118,183.66 = 28,904.43 : x
  2. Step 2: Convert to fraction form
    78,835.99/118,183.66 = 28,904.43/x
  3. Step 3: Cross multiply
    78,835.99x = 118,183.66 × 28,904.43
  4. Step 4: Simplify right side
    78,835.99x = 3,416,031,327.61
  5. Step 5: Solve for x
    x = 3,416,031,327.61/78,835.99
  6. Step 6: Final answer
    x = 43,330.86

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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.