Home / 65,292.12-90,121.81-38,450.20

Finding the Fourth Proportional to 65,292.12, 90,121.81 and 38,450.20

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Solution

The fourth proportional to 65,292.12, 90,121.81 and 38,450.20 is: 53,072.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,292.12 : 90,121.81 = 38,450.20 : x
  2. Step 2: Convert to fraction form
    65,292.12/90,121.81 = 38,450.20/x
  3. Step 3: Cross multiply
    65,292.12x = 90,121.81 × 38,450.20
  4. Step 4: Simplify right side
    65,292.12x = 3,465,201,176.90
  5. Step 5: Solve for x
    x = 3,465,201,176.90/65,292.12
  6. Step 6: Final answer
    x = 53,072.27

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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.