Home / 78,165.27-117,262.49-25,577.64

Finding the Fourth Proportional to 78,165.27, 117,262.49 and 25,577.64

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Solution

The fourth proportional to 78,165.27, 117,262.49 and 25,577.64 is: 38,371.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,165.27 : 117,262.49 = 25,577.64 : x
  2. Step 2: Convert to fraction form
    78,165.27/117,262.49 = 25,577.64/x
  3. Step 3: Cross multiply
    78,165.27x = 117,262.49 × 25,577.64
  4. Step 4: Simplify right side
    78,165.27x = 2,999,297,626.84
  5. Step 5: Solve for x
    x = 2,999,297,626.84/78,165.27
  6. Step 6: Final answer
    x = 38,371.23

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1.5x scale

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.