Home / 45,815.84-68,756.20-20,859.12

Finding the Fourth Proportional to 45,815.84, 68,756.20 and 20,859.12

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Solution

The fourth proportional to 45,815.84, 68,756.20 and 20,859.12 is: 31,303.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,815.84 : 68,756.20 = 20,859.12 : x
  2. Step 2: Convert to fraction form
    45,815.84/68,756.20 = 20,859.12/x
  3. Step 3: Cross multiply
    45,815.84x = 68,756.20 × 20,859.12
  4. Step 4: Simplify right side
    45,815.84x = 1,434,193,826.54
  5. Step 5: Solve for x
    x = 1,434,193,826.54/45,815.84
  6. Step 6: Final answer
    x = 31,303.45

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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.