Home / 77,639.45-107,129.32-43,643.41

Finding the Fourth Proportional to 77,639.45, 107,129.32 and 43,643.41

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Solution

The fourth proportional to 77,639.45, 107,129.32 and 43,643.41 is: 60,220.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,639.45 : 107,129.32 = 43,643.41 : x
  2. Step 2: Convert to fraction form
    77,639.45/107,129.32 = 43,643.41/x
  3. Step 3: Cross multiply
    77,639.45x = 107,129.32 × 43,643.41
  4. Step 4: Simplify right side
    77,639.45x = 4,675,488,458.85
  5. Step 5: Solve for x
    x = 4,675,488,458.85/77,639.45
  6. Step 6: Final answer
    x = 60,220.53

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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.