Home / 78,906.20-118,358.77-19,741.85

Finding the Fourth Proportional to 78,906.20, 118,358.77 and 19,741.85

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Solution

The fourth proportional to 78,906.20, 118,358.77 and 19,741.85 is: 29,612.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,906.20 : 118,358.77 = 19,741.85 : x
  2. Step 2: Convert to fraction form
    78,906.20/118,358.77 = 19,741.85/x
  3. Step 3: Cross multiply
    78,906.20x = 118,358.77 × 19,741.85
  4. Step 4: Simplify right side
    78,906.20x = 2,336,621,256.12
  5. Step 5: Solve for x
    x = 2,336,621,256.12/78,906.20
  6. Step 6: Final answer
    x = 29,612.64

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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.