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Finding the Fourth Proportional to 89,661.40, 134,492.10 and 30,563.80

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Solution

The fourth proportional to 89,661.40, 134,492.10 and 30,563.80 is: 45,845.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,661.40 : 134,492.10 = 30,563.80 : x
  2. Step 2: Convert to fraction form
    89,661.40/134,492.10 = 30,563.80/x
  3. Step 3: Cross multiply
    89,661.40x = 134,492.10 × 30,563.80
  4. Step 4: Simplify right side
    89,661.40x = 4,110,589,645.98
  5. Step 5: Solve for x
    x = 4,110,589,645.98/89,661.40
  6. Step 6: Final answer
    x = 45,845.70

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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.