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Finding the Fourth Proportional to 65,745.75, 90,729.14 and 35,937.75

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Solution

The fourth proportional to 65,745.75, 90,729.14 and 35,937.75 is: 49,594.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,745.75 : 90,729.14 = 35,937.75 : x
  2. Step 2: Convert to fraction form
    65,745.75/90,729.14 = 35,937.75/x
  3. Step 3: Cross multiply
    65,745.75x = 90,729.14 × 35,937.75
  4. Step 4: Simplify right side
    65,745.75x = 3,260,600,971.35
  5. Step 5: Solve for x
    x = 3,260,600,971.35/65,745.75
  6. Step 6: Final answer
    x = 49,594.10

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1.5x scale

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.