Home / 89,823.20-134,734.80-30,660.80

Finding the Fourth Proportional to 89,823.20, 134,734.80 and 30,660.80

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Solution

The fourth proportional to 89,823.20, 134,734.80 and 30,660.80 is: 45,991.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,823.20 : 134,734.80 = 30,660.80 : x
  2. Step 2: Convert to fraction form
    89,823.20/134,734.80 = 30,660.80/x
  3. Step 3: Cross multiply
    89,823.20x = 134,734.80 × 30,660.80
  4. Step 4: Simplify right side
    89,823.20x = 4,131,076,755.84
  5. Step 5: Solve for x
    x = 4,131,076,755.84/89,823.20
  6. Step 6: Final answer
    x = 45,991.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.