Home / 78,647.44-108,531.96-42,837.04

Finding the Fourth Proportional to 78,647.44, 108,531.96 and 42,837.04

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Solution

The fourth proportional to 78,647.44, 108,531.96 and 42,837.04 is: 59,114.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,647.44 : 108,531.96 = 42,837.04 : x
  2. Step 2: Convert to fraction form
    78,647.44/108,531.96 = 42,837.04/x
  3. Step 3: Cross multiply
    78,647.44x = 108,531.96 × 42,837.04
  4. Step 4: Simplify right side
    78,647.44x = 4,649,187,911.80
  5. Step 5: Solve for x
    x = 4,649,187,911.80/78,647.44
  6. Step 6: Final answer
    x = 59,114.29

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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.