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Finding the Fourth Proportional to 75,328, 112,992 and 26,080

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Solution

The fourth proportional to 75,328, 112,992 and 26,080 is: 39,120

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,328 : 112,992 = 26,080 : x
  2. Step 2: Convert to fraction form
    75,328/112,992 = 26,080/x
  3. Step 3: Cross multiply
    75,328x = 112,992 × 26,080
  4. Step 4: Simplify right side
    75,328x = 2,946,831,360
  5. Step 5: Solve for x
    x = 2,946,831,360/75,328
  6. Step 6: Final answer
    x = 39,120

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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.