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Finding the Fourth Proportional to 84,745.70, 127,070.38 and 65,504.66

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Solution

The fourth proportional to 84,745.70, 127,070.38 and 65,504.66 is: 98,219.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,745.70 : 127,070.38 = 65,504.66 : x
  2. Step 2: Convert to fraction form
    84,745.70/127,070.38 = 65,504.66/x
  3. Step 3: Cross multiply
    84,745.70x = 127,070.38 × 65,504.66
  4. Step 4: Simplify right side
    84,745.70x = 8,323,702,037.97
  5. Step 5: Solve for x
    x = 8,323,702,037.97/84,745.70
  6. Step 6: Final answer
    x = 98,219.76

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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.