Home / 78,940.04-108,935.99-43,129.29

Finding the Fourth Proportional to 78,940.04, 108,935.99 and 43,129.29

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Solution

The fourth proportional to 78,940.04, 108,935.99 and 43,129.29 is: 59,517.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,940.04 : 108,935.99 = 43,129.29 : x
  2. Step 2: Convert to fraction form
    78,940.04/108,935.99 = 43,129.29/x
  3. Step 3: Cross multiply
    78,940.04x = 108,935.99 × 43,129.29
  4. Step 4: Simplify right side
    78,940.04x = 4,698,331,339.60
  5. Step 5: Solve for x
    x = 4,698,331,339.60/78,940.04
  6. Step 6: Final answer
    x = 59,517.72

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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.