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Finding the Fourth Proportional to 66,259.68, 91,440 and 36,046.68

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Solution

The fourth proportional to 66,259.68, 91,440 and 36,046.68 is: 49,745.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,259.68 : 91,440 = 36,046.68 : x
  2. Step 2: Convert to fraction form
    66,259.68/91,440 = 36,046.68/x
  3. Step 3: Cross multiply
    66,259.68x = 91,440 × 36,046.68
  4. Step 4: Simplify right side
    66,259.68x = 3,296,108,419.20
  5. Step 5: Solve for x
    x = 3,296,108,419.20/66,259.68
  6. Step 6: Final answer
    x = 49,745.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.