Home / 78,835.09-118,249.32-36,700.69

Finding the Fourth Proportional to 78,835.09, 118,249.32 and 36,700.69

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Solution

The fourth proportional to 78,835.09, 118,249.32 and 36,700.69 is: 55,049.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,835.09 : 118,249.32 = 36,700.69 : x
  2. Step 2: Convert to fraction form
    78,835.09/118,249.32 = 36,700.69/x
  3. Step 3: Cross multiply
    78,835.09x = 118,249.32 × 36,700.69
  4. Step 4: Simplify right side
    78,835.09x = 4,339,831,636.03
  5. Step 5: Solve for x
    x = 4,339,831,636.03/78,835.09
  6. Step 6: Final answer
    x = 55,049.49

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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.