Home / 78,630.69-117,964.46-26,040.18

Finding the Fourth Proportional to 78,630.69, 117,964.46 and 26,040.18

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Solution

The fourth proportional to 78,630.69, 117,964.46 and 26,040.18 is: 39,066.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,630.69 : 117,964.46 = 26,040.18 : x
  2. Step 2: Convert to fraction form
    78,630.69/117,964.46 = 26,040.18/x
  3. Step 3: Cross multiply
    78,630.69x = 117,964.46 × 26,040.18
  4. Step 4: Simplify right side
    78,630.69x = 3,071,815,772.00
  5. Step 5: Solve for x
    x = 3,071,815,772.00/78,630.69
  6. Step 6: Final answer
    x = 39,066.37

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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.