Home / 78,301.80-117,366.30-43,266.60

Finding the Fourth Proportional to 78,301.80, 117,366.30 and 43,266.60

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Solution

The fourth proportional to 78,301.80, 117,366.30 and 43,266.60 is: 64,852.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,301.80 : 117,366.30 = 43,266.60 : x
  2. Step 2: Convert to fraction form
    78,301.80/117,366.30 = 43,266.60/x
  3. Step 3: Cross multiply
    78,301.80x = 117,366.30 × 43,266.60
  4. Step 4: Simplify right side
    78,301.80x = 5,078,040,755.58
  5. Step 5: Solve for x
    x = 5,078,040,755.58/78,301.80
  6. Step 6: Final answer
    x = 64,852.16

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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.