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Finding the Fourth Proportional to 85,492.97, 128,239.45 and 23,163.47

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Solution

The fourth proportional to 85,492.97, 128,239.45 and 23,163.47 is: 34,745.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,492.97 : 128,239.45 = 23,163.47 : x
  2. Step 2: Convert to fraction form
    85,492.97/128,239.45 = 23,163.47/x
  3. Step 3: Cross multiply
    85,492.97x = 128,239.45 × 23,163.47
  4. Step 4: Simplify right side
    85,492.97x = 2,970,470,564.98
  5. Step 5: Solve for x
    x = 2,970,470,564.98/85,492.97
  6. Step 6: Final answer
    x = 34,745.20

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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.