Home / 78,360.70-117,558.33-25,768.06

Finding the Fourth Proportional to 78,360.70, 117,558.33 and 25,768.06

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Solution

The fourth proportional to 78,360.70, 117,558.33 and 25,768.06 is: 38,657.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,360.70 : 117,558.33 = 25,768.06 : x
  2. Step 2: Convert to fraction form
    78,360.70/117,558.33 = 25,768.06/x
  3. Step 3: Cross multiply
    78,360.70x = 117,558.33 × 25,768.06
  4. Step 4: Simplify right side
    78,360.70x = 3,029,250,100.94
  5. Step 5: Solve for x
    x = 3,029,250,100.94/78,360.70
  6. Step 6: Final answer
    x = 38,657.77

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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.