Home / 87,721.92-121,051.67-49,480.34

Finding the Fourth Proportional to 87,721.92, 121,051.67 and 49,480.34

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Solution

The fourth proportional to 87,721.92, 121,051.67 and 49,480.34 is: 68,280.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,721.92 : 121,051.67 = 49,480.34 : x
  2. Step 2: Convert to fraction form
    87,721.92/121,051.67 = 49,480.34/x
  3. Step 3: Cross multiply
    87,721.92x = 121,051.67 × 49,480.34
  4. Step 4: Simplify right side
    87,721.92x = 5,989,676,936.51
  5. Step 5: Solve for x
    x = 5,989,676,936.51/87,721.92
  6. Step 6: Final answer
    x = 68,280.28

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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.