Home / 78,440.58-117,657.66-22,280.43

Finding the Fourth Proportional to 78,440.58, 117,657.66 and 22,280.43

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Solution

The fourth proportional to 78,440.58, 117,657.66 and 22,280.43 is: 33,419.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,440.58 : 117,657.66 = 22,280.43 : x
  2. Step 2: Convert to fraction form
    78,440.58/117,657.66 = 22,280.43/x
  3. Step 3: Cross multiply
    78,440.58x = 117,657.66 × 22,280.43
  4. Step 4: Simplify right side
    78,440.58x = 2,621,463,257.59
  5. Step 5: Solve for x
    x = 2,621,463,257.59/78,440.58
  6. Step 6: Final answer
    x = 33,419.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.