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Finding the Fourth Proportional to 81,695.32, 122,455.86 and 46,559.32

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Solution

The fourth proportional to 81,695.32, 122,455.86 and 46,559.32 is: 69,789.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,695.32 : 122,455.86 = 46,559.32 : x
  2. Step 2: Convert to fraction form
    81,695.32/122,455.86 = 46,559.32/x
  3. Step 3: Cross multiply
    81,695.32x = 122,455.86 × 46,559.32
  4. Step 4: Simplify right side
    81,695.32x = 5,701,461,571.62
  5. Step 5: Solve for x
    x = 5,701,461,571.62/81,695.32
  6. Step 6: Final answer
    x = 69,789.33

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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.