Home / 78,811.40-118,188.30-26,222.60

Finding the Fourth Proportional to 78,811.40, 118,188.30 and 26,222.60

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Solution

The fourth proportional to 78,811.40, 118,188.30 and 26,222.60 is: 39,324.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,811.40 : 118,188.30 = 26,222.60 : x
  2. Step 2: Convert to fraction form
    78,811.40/118,188.30 = 26,222.60/x
  3. Step 3: Cross multiply
    78,811.40x = 118,188.30 × 26,222.60
  4. Step 4: Simplify right side
    78,811.40x = 3,099,204,515.58
  5. Step 5: Solve for x
    x = 3,099,204,515.58/78,811.40
  6. Step 6: Final answer
    x = 39,324.32

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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.