Home / 65,824.20-90,738.90-47,890.80

Finding the Fourth Proportional to 65,824.20, 90,738.90 and 47,890.80

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Solution

The fourth proportional to 65,824.20, 90,738.90 and 47,890.80 is: 66,017.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,824.20 : 90,738.90 = 47,890.80 : x
  2. Step 2: Convert to fraction form
    65,824.20/90,738.90 = 47,890.80/x
  3. Step 3: Cross multiply
    65,824.20x = 90,738.90 × 47,890.80
  4. Step 4: Simplify right side
    65,824.20x = 4,345,558,512.12
  5. Step 5: Solve for x
    x = 4,345,558,512.12/65,824.20
  6. Step 6: Final answer
    x = 66,017.64

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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.