Home / 77,911.10-107,479.73-51,041.78

Finding the Fourth Proportional to 77,911.10, 107,479.73 and 51,041.78

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Solution

The fourth proportional to 77,911.10, 107,479.73 and 51,041.78 is: 70,413.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,911.10 : 107,479.73 = 51,041.78 : x
  2. Step 2: Convert to fraction form
    77,911.10/107,479.73 = 51,041.78/x
  3. Step 3: Cross multiply
    77,911.10x = 107,479.73 × 51,041.78
  4. Step 4: Simplify right side
    77,911.10x = 5,485,955,940.51
  5. Step 5: Solve for x
    x = 5,485,955,940.51/77,911.10
  6. Step 6: Final answer
    x = 70,413.03

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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.