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Finding the Fourth Proportional to 45,541, 68,321.58 and 19,268.20

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Solution

The fourth proportional to 45,541, 68,321.58 and 19,268.20 is: 28,906.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,541 : 68,321.58 = 19,268.20 : x
  2. Step 2: Convert to fraction form
    45,541/68,321.58 = 19,268.20/x
  3. Step 3: Cross multiply
    45,541x = 68,321.58 × 19,268.20
  4. Step 4: Simplify right side
    45,541x = 1,316,433,867.76
  5. Step 5: Solve for x
    x = 1,316,433,867.76/45,541
  6. Step 6: Final answer
    x = 28,906.56

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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.