Home / 68,405.36-102,643.56-51,760.44

Finding the Fourth Proportional to 68,405.36, 102,643.56 and 51,760.44

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Solution

The fourth proportional to 68,405.36, 102,643.56 and 51,760.44 is: 77,667.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,405.36 : 102,643.56 = 51,760.44 : x
  2. Step 2: Convert to fraction form
    68,405.36/102,643.56 = 51,760.44/x
  3. Step 3: Cross multiply
    68,405.36x = 102,643.56 × 51,760.44
  4. Step 4: Simplify right side
    68,405.36x = 5,312,875,828.77
  5. Step 5: Solve for x
    x = 5,312,875,828.77/68,405.36
  6. Step 6: Final answer
    x = 77,667.54

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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.