Home / 86,916.78-119,936.52-51,115.59

Finding the Fourth Proportional to 86,916.78, 119,936.52 and 51,115.59

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Solution

The fourth proportional to 86,916.78, 119,936.52 and 51,115.59 is: 70,534.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,916.78 : 119,936.52 = 51,115.59 : x
  2. Step 2: Convert to fraction form
    86,916.78/119,936.52 = 51,115.59/x
  3. Step 3: Cross multiply
    86,916.78x = 119,936.52 × 51,115.59
  4. Step 4: Simplify right side
    86,916.78x = 6,130,625,982.35
  5. Step 5: Solve for x
    x = 6,130,625,982.35/86,916.78
  6. Step 6: Final answer
    x = 70,534.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.