Home / 81,286.08-121,938.24-46,216.32

Finding the Fourth Proportional to 81,286.08, 121,938.24 and 46,216.32

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Solution

The fourth proportional to 81,286.08, 121,938.24 and 46,216.32 is: 69,329.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,286.08 : 121,938.24 = 46,216.32 : x
  2. Step 2: Convert to fraction form
    81,286.08/121,938.24 = 46,216.32/x
  3. Step 3: Cross multiply
    81,286.08x = 121,938.24 × 46,216.32
  4. Step 4: Simplify right side
    81,286.08x = 5,635,536,720.08
  5. Step 5: Solve for x
    x = 5,635,536,720.08/81,286.08
  6. Step 6: Final answer
    x = 69,329.67

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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.