Home / 78,743.80-118,040.10-26,126.20

Finding the Fourth Proportional to 78,743.80, 118,040.10 and 26,126.20

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Solution

The fourth proportional to 78,743.80, 118,040.10 and 26,126.20 is: 39,164.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,743.80 : 118,040.10 = 26,126.20 : x
  2. Step 2: Convert to fraction form
    78,743.80/118,040.10 = 26,126.20/x
  3. Step 3: Cross multiply
    78,743.80x = 118,040.10 × 26,126.20
  4. Step 4: Simplify right side
    78,743.80x = 3,083,939,260.62
  5. Step 5: Solve for x
    x = 3,083,939,260.62/78,743.80
  6. Step 6: Final answer
    x = 39,164.22

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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.