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Finding the Fourth Proportional to 45,335.54, 67,964.19 and 20,015.75

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Solution

The fourth proportional to 45,335.54, 67,964.19 and 20,015.75 is: 30,006.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,335.54 : 67,964.19 = 20,015.75 : x
  2. Step 2: Convert to fraction form
    45,335.54/67,964.19 = 20,015.75/x
  3. Step 3: Cross multiply
    45,335.54x = 67,964.19 × 20,015.75
  4. Step 4: Simplify right side
    45,335.54x = 1,360,354,235.99
  5. Step 5: Solve for x
    x = 1,360,354,235.99/45,335.54
  6. Step 6: Final answer
    x = 30,006.35

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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.