Home / 65,389.22-90,246.32-38,174.23

Finding the Fourth Proportional to 65,389.22, 90,246.32 and 38,174.23

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Solution

The fourth proportional to 65,389.22, 90,246.32 and 38,174.23 is: 52,685.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,389.22 : 90,246.32 = 38,174.23 : x
  2. Step 2: Convert to fraction form
    65,389.22/90,246.32 = 38,174.23/x
  3. Step 3: Cross multiply
    65,389.22x = 90,246.32 × 38,174.23
  4. Step 4: Simplify right side
    65,389.22x = 3,445,083,776.33
  5. Step 5: Solve for x
    x = 3,445,083,776.33/65,389.22
  6. Step 6: Final answer
    x = 52,685.81

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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.