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Finding the Fourth Proportional to 66,289.67, 91,479.93 and 36,074.96

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Solution

The fourth proportional to 66,289.67, 91,479.93 and 36,074.96 is: 49,783.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,289.67 : 91,479.93 = 36,074.96 : x
  2. Step 2: Convert to fraction form
    66,289.67/91,479.93 = 36,074.96/x
  3. Step 3: Cross multiply
    66,289.67x = 91,479.93 × 36,074.96
  4. Step 4: Simplify right side
    66,289.67x = 3,300,134,815.55
  5. Step 5: Solve for x
    x = 3,300,134,815.55/66,289.67
  6. Step 6: Final answer
    x = 49,783.55

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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.