Home / 77,991.17-107,627.49-43,999.65

Finding the Fourth Proportional to 77,991.17, 107,627.49 and 43,999.65

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Solution

The fourth proportional to 77,991.17, 107,627.49 and 43,999.65 is: 60,719.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,991.17 : 107,627.49 = 43,999.65 : x
  2. Step 2: Convert to fraction form
    77,991.17/107,627.49 = 43,999.65/x
  3. Step 3: Cross multiply
    77,991.17x = 107,627.49 × 43,999.65
  4. Step 4: Simplify right side
    77,991.17x = 4,735,571,890.38
  5. Step 5: Solve for x
    x = 4,735,571,890.38/77,991.17
  6. Step 6: Final answer
    x = 60,719.34

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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.