Home / 87,112.26-120,214.80-49,386.51

Finding the Fourth Proportional to 87,112.26, 120,214.80 and 49,386.51

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Solution

The fourth proportional to 87,112.26, 120,214.80 and 49,386.51 is: 68,153.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,112.26 : 120,214.80 = 49,386.51 : x
  2. Step 2: Convert to fraction form
    87,112.26/120,214.80 = 49,386.51/x
  3. Step 3: Cross multiply
    87,112.26x = 120,214.80 × 49,386.51
  4. Step 4: Simplify right side
    87,112.26x = 5,936,989,422.35
  5. Step 5: Solve for x
    x = 5,936,989,422.35/87,112.26
  6. Step 6: Final answer
    x = 68,153.32

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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.