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Finding the Fourth Proportional to 89,009.40, 133,481.70 and 44,621.40

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Solution

The fourth proportional to 89,009.40, 133,481.70 and 44,621.40 is: 66,915.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,009.40 : 133,481.70 = 44,621.40 : x
  2. Step 2: Convert to fraction form
    89,009.40/133,481.70 = 44,621.40/x
  3. Step 3: Cross multiply
    89,009.40x = 133,481.70 × 44,621.40
  4. Step 4: Simplify right side
    89,009.40x = 5,956,140,328.38
  5. Step 5: Solve for x
    x = 5,956,140,328.38/89,009.40
  6. Step 6: Final answer
    x = 66,915.86

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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.