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Finding the Fourth Proportional to 65,295.25, 90,115.95 and 38,440.24

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Solution

The fourth proportional to 65,295.25, 90,115.95 and 38,440.24 is: 53,052.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,295.25 : 90,115.95 = 38,440.24 : x
  2. Step 2: Convert to fraction form
    65,295.25/90,115.95 = 38,440.24/x
  3. Step 3: Cross multiply
    65,295.25x = 90,115.95 × 38,440.24
  4. Step 4: Simplify right side
    65,295.25x = 3,464,078,745.83
  5. Step 5: Solve for x
    x = 3,464,078,745.83/65,295.25
  6. Step 6: Final answer
    x = 53,052.54

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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.