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Finding the Fourth Proportional to 48,422, 66,816.08 and 28,274.88

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Solution

The fourth proportional to 48,422, 66,816.08 and 28,274.88 is: 39,015.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,422 : 66,816.08 = 28,274.88 : x
  2. Step 2: Convert to fraction form
    48,422/66,816.08 = 28,274.88/x
  3. Step 3: Cross multiply
    48,422x = 66,816.08 × 28,274.88
  4. Step 4: Simplify right side
    48,422x = 1,889,216,644.07
  5. Step 5: Solve for x
    x = 1,889,216,644.07/48,422
  6. Step 6: Final answer
    x = 39,015.67

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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.