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Finding the Fourth Proportional to 65,745.92, 90,729.13 and 35,531.25

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Solution

The fourth proportional to 65,745.92, 90,729.13 and 35,531.25 is: 49,033.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,745.92 : 90,729.13 = 35,531.25 : x
  2. Step 2: Convert to fraction form
    65,745.92/90,729.13 = 35,531.25/x
  3. Step 3: Cross multiply
    65,745.92x = 90,729.13 × 35,531.25
  4. Step 4: Simplify right side
    65,745.92x = 3,223,719,400.31
  5. Step 5: Solve for x
    x = 3,223,719,400.31/65,745.92
  6. Step 6: Final answer
    x = 49,033.00

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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.