Home / 78,940.16-108,938.99-43,132.39

Finding the Fourth Proportional to 78,940.16, 108,938.99 and 43,132.39

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Solution

The fourth proportional to 78,940.16, 108,938.99 and 43,132.39 is: 59,523.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,940.16 : 108,938.99 = 43,132.39 : x
  2. Step 2: Convert to fraction form
    78,940.16/108,938.99 = 43,132.39/x
  3. Step 3: Cross multiply
    78,940.16x = 108,938.99 × 43,132.39
  4. Step 4: Simplify right side
    78,940.16x = 4,698,798,514.88
  5. Step 5: Solve for x
    x = 4,698,798,514.88/78,940.16
  6. Step 6: Final answer
    x = 59,523.55

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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.