Home / 78,845.60-118,287.30-26,255.56

Finding the Fourth Proportional to 78,845.60, 118,287.30 and 26,255.56

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Solution

The fourth proportional to 78,845.60, 118,287.30 and 26,255.56 is: 39,389.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,845.60 : 118,287.30 = 26,255.56 : x
  2. Step 2: Convert to fraction form
    78,845.60/118,287.30 = 26,255.56/x
  3. Step 3: Cross multiply
    78,845.60x = 118,287.30 × 26,255.56
  4. Step 4: Simplify right side
    78,845.60x = 3,105,699,302.39
  5. Step 5: Solve for x
    x = 3,105,699,302.39/78,845.60
  6. Step 6: Final answer
    x = 39,389.63

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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.