Home / 78,845.85-118,287.68-26,255.81

Finding the Fourth Proportional to 78,845.85, 118,287.68 and 26,255.81

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Solution

The fourth proportional to 78,845.85, 118,287.68 and 26,255.81 is: 39,390.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,845.85 : 118,287.68 = 26,255.81 : x
  2. Step 2: Convert to fraction form
    78,845.85/118,287.68 = 26,255.81/x
  3. Step 3: Cross multiply
    78,845.85x = 118,287.68 × 26,255.81
  4. Step 4: Simplify right side
    78,845.85x = 3,105,738,720.14
  5. Step 5: Solve for x
    x = 3,105,738,720.14/78,845.85
  6. Step 6: Final answer
    x = 39,390.01

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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.