Home / 57,511.64-78,942-51,083.48

Finding the Fourth Proportional to 57,511.64, 78,942 and 51,083.48

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Solution

The fourth proportional to 57,511.64, 78,942 and 51,083.48 is: 70,118.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,511.64 : 78,942 = 51,083.48 : x
  2. Step 2: Convert to fraction form
    57,511.64/78,942 = 51,083.48/x
  3. Step 3: Cross multiply
    57,511.64x = 78,942 × 51,083.48
  4. Step 4: Simplify right side
    57,511.64x = 4,032,632,078.16
  5. Step 5: Solve for x
    x = 4,032,632,078.16/57,511.64
  6. Step 6: Final answer
    x = 70,118.54

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.