Home / 78,750.48-118,091.06-28,817.60

Finding the Fourth Proportional to 78,750.48, 118,091.06 and 28,817.60

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Solution

The fourth proportional to 78,750.48, 118,091.06 and 28,817.60 is: 43,213.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,750.48 : 118,091.06 = 28,817.60 : x
  2. Step 2: Convert to fraction form
    78,750.48/118,091.06 = 28,817.60/x
  3. Step 3: Cross multiply
    78,750.48x = 118,091.06 × 28,817.60
  4. Step 4: Simplify right side
    78,750.48x = 3,403,100,930.66
  5. Step 5: Solve for x
    x = 3,403,100,930.66/78,750.48
  6. Step 6: Final answer
    x = 43,213.72

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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.