Home / 78,982.75-118,485.24-25,657.66

Finding the Fourth Proportional to 78,982.75, 118,485.24 and 25,657.66

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Solution

The fourth proportional to 78,982.75, 118,485.24 and 25,657.66 is: 38,490.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,982.75 : 118,485.24 = 25,657.66 : x
  2. Step 2: Convert to fraction form
    78,982.75/118,485.24 = 25,657.66/x
  3. Step 3: Cross multiply
    78,982.75x = 118,485.24 × 25,657.66
  4. Step 4: Simplify right side
    78,982.75x = 3,040,054,002.94
  5. Step 5: Solve for x
    x = 3,040,054,002.94/78,982.75
  6. Step 6: Final answer
    x = 38,490.10

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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.