Home / 78,660.25-118,583.34-73,586.41

Finding the Fourth Proportional to 78,660.25, 118,583.34 and 73,586.41

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Solution

The fourth proportional to 78,660.25, 118,583.34 and 73,586.41 is: 110,934.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,660.25 : 118,583.34 = 73,586.41 : x
  2. Step 2: Convert to fraction form
    78,660.25/118,583.34 = 73,586.41/x
  3. Step 3: Cross multiply
    78,660.25x = 118,583.34 × 73,586.41
  4. Step 4: Simplify right side
    78,660.25x = 8,726,122,276.41
  5. Step 5: Solve for x
    x = 8,726,122,276.41/78,660.25
  6. Step 6: Final answer
    x = 110,934.33

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.