Home / 78,663.44-118,015.36-26,087.60

Finding the Fourth Proportional to 78,663.44, 118,015.36 and 26,087.60

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Solution

The fourth proportional to 78,663.44, 118,015.36 and 26,087.60 is: 39,138.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,663.44 : 118,015.36 = 26,087.60 : x
  2. Step 2: Convert to fraction form
    78,663.44/118,015.36 = 26,087.60/x
  3. Step 3: Cross multiply
    78,663.44x = 118,015.36 × 26,087.60
  4. Step 4: Simplify right side
    78,663.44x = 3,078,737,505.54
  5. Step 5: Solve for x
    x = 3,078,737,505.54/78,663.44
  6. Step 6: Final answer
    x = 39,138.10

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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.