Home / 78,724.48-118,087.68-23,321.60

Finding the Fourth Proportional to 78,724.48, 118,087.68 and 23,321.60

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Solution

The fourth proportional to 78,724.48, 118,087.68 and 23,321.60 is: 34,982.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,724.48 : 118,087.68 = 23,321.60 : x
  2. Step 2: Convert to fraction form
    78,724.48/118,087.68 = 23,321.60/x
  3. Step 3: Cross multiply
    78,724.48x = 118,087.68 × 23,321.60
  4. Step 4: Simplify right side
    78,724.48x = 2,753,993,637.89
  5. Step 5: Solve for x
    x = 2,753,993,637.89/78,724.48
  6. Step 6: Final answer
    x = 34,982.68

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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.