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Finding the Fourth Proportional to 78,799.60, 118,215.60 and 26,246.80

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Solution

The fourth proportional to 78,799.60, 118,215.60 and 26,246.80 is: 39,375.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,799.60 : 118,215.60 = 26,246.80 : x
  2. Step 2: Convert to fraction form
    78,799.60/118,215.60 = 26,246.80/x
  3. Step 3: Cross multiply
    78,799.60x = 118,215.60 × 26,246.80
  4. Step 4: Simplify right side
    78,799.60x = 3,102,781,210.08
  5. Step 5: Solve for x
    x = 3,102,781,210.08/78,799.60
  6. Step 6: Final answer
    x = 39,375.60

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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.