Home / 81,690.32-122,448.36-46,554.32

Finding the Fourth Proportional to 81,690.32, 122,448.36 and 46,554.32

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Solution

The fourth proportional to 81,690.32, 122,448.36 and 46,554.32 is: 69,781.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,690.32 : 122,448.36 = 46,554.32 : x
  2. Step 2: Convert to fraction form
    81,690.32/122,448.36 = 46,554.32/x
  3. Step 3: Cross multiply
    81,690.32x = 122,448.36 × 46,554.32
  4. Step 4: Simplify right side
    81,690.32x = 5,700,500,134.92
  5. Step 5: Solve for x
    x = 5,700,500,134.92/81,690.32
  6. Step 6: Final answer
    x = 69,781.83

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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.