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Finding the Fourth Proportional to 65,485.54, 90,370.65 and 35,677.54

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Solution

The fourth proportional to 65,485.54, 90,370.65 and 35,677.54 is: 49,235.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,485.54 : 90,370.65 = 35,677.54 : x
  2. Step 2: Convert to fraction form
    65,485.54/90,370.65 = 35,677.54/x
  3. Step 3: Cross multiply
    65,485.54x = 90,370.65 × 35,677.54
  4. Step 4: Simplify right side
    65,485.54x = 3,224,202,480.20
  5. Step 5: Solve for x
    x = 3,224,202,480.20/65,485.54
  6. Step 6: Final answer
    x = 49,235.33

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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.