Home / 84,018.29-115,920.36-49,999.50

Finding the Fourth Proportional to 84,018.29, 115,920.36 and 49,999.50

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Solution

The fourth proportional to 84,018.29, 115,920.36 and 49,999.50 is: 68,984.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,018.29 : 115,920.36 = 49,999.50 : x
  2. Step 2: Convert to fraction form
    84,018.29/115,920.36 = 49,999.50/x
  3. Step 3: Cross multiply
    84,018.29x = 115,920.36 × 49,999.50
  4. Step 4: Simplify right side
    84,018.29x = 5,795,960,039.82
  5. Step 5: Solve for x
    x = 5,795,960,039.82/84,018.29
  6. Step 6: Final answer
    x = 68,984.51

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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.