Home / 78,188.77-117,271.81-25,600.33

Finding the Fourth Proportional to 78,188.77, 117,271.81 and 25,600.33

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Solution

The fourth proportional to 78,188.77, 117,271.81 and 25,600.33 is: 38,396.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,188.77 : 117,271.81 = 25,600.33 : x
  2. Step 2: Convert to fraction form
    78,188.77/117,271.81 = 25,600.33/x
  3. Step 3: Cross multiply
    78,188.77x = 117,271.81 × 25,600.33
  4. Step 4: Simplify right side
    78,188.77x = 3,002,197,035.70
  5. Step 5: Solve for x
    x = 3,002,197,035.70/78,188.77
  6. Step 6: Final answer
    x = 38,396.78

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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.