Home / 81,939.51-113,050.12-49,687.06

Finding the Fourth Proportional to 81,939.51, 113,050.12 and 49,687.06

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Solution

The fourth proportional to 81,939.51, 113,050.12 and 49,687.06 is: 68,552.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,939.51 : 113,050.12 = 49,687.06 : x
  2. Step 2: Convert to fraction form
    81,939.51/113,050.12 = 49,687.06/x
  3. Step 3: Cross multiply
    81,939.51x = 113,050.12 × 49,687.06
  4. Step 4: Simplify right side
    81,939.51x = 5,617,128,095.45
  5. Step 5: Solve for x
    x = 5,617,128,095.45/81,939.51
  6. Step 6: Final answer
    x = 68,552.13

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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.