Home / 78,968.83-108,976.99-43,158.84

Finding the Fourth Proportional to 78,968.83, 108,976.99 and 43,158.84

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Solution

The fourth proportional to 78,968.83, 108,976.99 and 43,158.84 is: 59,559.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,968.83 : 108,976.99 = 43,158.84 : x
  2. Step 2: Convert to fraction form
    78,968.83/108,976.99 = 43,158.84/x
  3. Step 3: Cross multiply
    78,968.83x = 108,976.99 × 43,158.84
  4. Step 4: Simplify right side
    78,968.83x = 4,703,320,936.47
  5. Step 5: Solve for x
    x = 4,703,320,936.47/78,968.83
  6. Step 6: Final answer
    x = 59,559.21

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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.