Home / 78,816.40-118,195.80-26,227.60

Finding the Fourth Proportional to 78,816.40, 118,195.80 and 26,227.60

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Solution

The fourth proportional to 78,816.40, 118,195.80 and 26,227.60 is: 39,331.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,816.40 : 118,195.80 = 26,227.60 : x
  2. Step 2: Convert to fraction form
    78,816.40/118,195.80 = 26,227.60/x
  3. Step 3: Cross multiply
    78,816.40x = 118,195.80 × 26,227.60
  4. Step 4: Simplify right side
    78,816.40x = 3,099,992,164.08
  5. Step 5: Solve for x
    x = 3,099,992,164.08/78,816.40
  6. Step 6: Final answer
    x = 39,331.82

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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.