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Finding the Fourth Proportional to 33,030.40, 49,545.60 and 8,406.40

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Solution

The fourth proportional to 33,030.40, 49,545.60 and 8,406.40 is: 12,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,030.40 : 49,545.60 = 8,406.40 : x
  2. Step 2: Convert to fraction form
    33,030.40/49,545.60 = 8,406.40/x
  3. Step 3: Cross multiply
    33,030.40x = 49,545.60 × 8,406.40
  4. Step 4: Simplify right side
    33,030.40x = 416,500,131.84
  5. Step 5: Solve for x
    x = 416,500,131.84/33,030.40
  6. Step 6: Final answer
    x = 12,609.60

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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.