Home / 65,517.37-90,423.68-40,038.41

Finding the Fourth Proportional to 65,517.37, 90,423.68 and 40,038.41

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Solution

The fourth proportional to 65,517.37, 90,423.68 and 40,038.41 is: 55,258.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,517.37 : 90,423.68 = 40,038.41 : x
  2. Step 2: Convert to fraction form
    65,517.37/90,423.68 = 40,038.41/x
  3. Step 3: Cross multiply
    65,517.37x = 90,423.68 × 40,038.41
  4. Step 4: Simplify right side
    65,517.37x = 3,620,420,399.42
  5. Step 5: Solve for x
    x = 3,620,420,399.42/65,517.37
  6. Step 6: Final answer
    x = 55,258.94

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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.