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Finding the Fourth Proportional to 66,328.76, 91,540.14 and 49,532.60

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Solution

The fourth proportional to 66,328.76, 91,540.14 and 49,532.60 is: 68,359.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,328.76 : 91,540.14 = 49,532.60 : x
  2. Step 2: Convert to fraction form
    66,328.76/91,540.14 = 49,532.60/x
  3. Step 3: Cross multiply
    66,328.76x = 91,540.14 × 49,532.60
  4. Step 4: Simplify right side
    66,328.76x = 4,534,221,138.56
  5. Step 5: Solve for x
    x = 4,534,221,138.56/66,328.76
  6. Step 6: Final answer
    x = 68,359.81

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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.