Home / 78,819.40-118,200.30-26,230.60

Finding the Fourth Proportional to 78,819.40, 118,200.30 and 26,230.60

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Solution

The fourth proportional to 78,819.40, 118,200.30 and 26,230.60 is: 39,336.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,819.40 : 118,200.30 = 26,230.60 : x
  2. Step 2: Convert to fraction form
    78,819.40/118,200.30 = 26,230.60/x
  3. Step 3: Cross multiply
    78,819.40x = 118,200.30 × 26,230.60
  4. Step 4: Simplify right side
    78,819.40x = 3,100,464,789.18
  5. Step 5: Solve for x
    x = 3,100,464,789.18/78,819.40
  6. Step 6: Final answer
    x = 39,336.32

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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.