Home / 45,711.47-68,558.76-20,745.51

Finding the Fourth Proportional to 45,711.47, 68,558.76 and 20,745.51

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Solution

The fourth proportional to 45,711.47, 68,558.76 and 20,745.51 is: 31,114.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,711.47 : 68,558.76 = 20,745.51 : x
  2. Step 2: Convert to fraction form
    45,711.47/68,558.76 = 20,745.51/x
  3. Step 3: Cross multiply
    45,711.47x = 68,558.76 × 20,745.51
  4. Step 4: Simplify right side
    45,711.47x = 1,422,286,441.17
  5. Step 5: Solve for x
    x = 1,422,286,441.17/45,711.47
  6. Step 6: Final answer
    x = 31,114.44

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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.