Home / 65,255.19-90,050.31-38,391.54

Finding the Fourth Proportional to 65,255.19, 90,050.31 and 38,391.54

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Solution

The fourth proportional to 65,255.19, 90,050.31 and 38,391.54 is: 52,979.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,255.19 : 90,050.31 = 38,391.54 : x
  2. Step 2: Convert to fraction form
    65,255.19/90,050.31 = 38,391.54/x
  3. Step 3: Cross multiply
    65,255.19x = 90,050.31 × 38,391.54
  4. Step 4: Simplify right side
    65,255.19x = 3,457,170,078.38
  5. Step 5: Solve for x
    x = 3,457,170,078.38/65,255.19
  6. Step 6: Final answer
    x = 52,979.24

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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.