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Finding the Fourth Proportional to 78,793.60, 118,206.60 and 26,240.80

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Solution

The fourth proportional to 78,793.60, 118,206.60 and 26,240.80 is: 39,366.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,793.60 : 118,206.60 = 26,240.80 : x
  2. Step 2: Convert to fraction form
    78,793.60/118,206.60 = 26,240.80/x
  3. Step 3: Cross multiply
    78,793.60x = 118,206.60 × 26,240.80
  4. Step 4: Simplify right side
    78,793.60x = 3,101,835,749.28
  5. Step 5: Solve for x
    x = 3,101,835,749.28/78,793.60
  6. Step 6: Final answer
    x = 39,366.60

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1.5x scale

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.