Home / 87,745.86-121,089.31-49,513.51

Finding the Fourth Proportional to 87,745.86, 121,089.31 and 49,513.51

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Solution

The fourth proportional to 87,745.86, 121,089.31 and 49,513.51 is: 68,328.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,745.86 : 121,089.31 = 49,513.51 : x
  2. Step 2: Convert to fraction form
    87,745.86/121,089.31 = 49,513.51/x
  3. Step 3: Cross multiply
    87,745.86x = 121,089.31 × 49,513.51
  4. Step 4: Simplify right side
    87,745.86x = 5,995,556,974.83
  5. Step 5: Solve for x
    x = 5,995,556,974.83/87,745.86
  6. Step 6: Final answer
    x = 68,328.66

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1.5x scale

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.