Home / 74,019.85-110,705.78-66,179.05

Finding the Fourth Proportional to 74,019.85, 110,705.78 and 66,179.05

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Solution

The fourth proportional to 74,019.85, 110,705.78 and 66,179.05 is: 98,978.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,019.85 : 110,705.78 = 66,179.05 : x
  2. Step 2: Convert to fraction form
    74,019.85/110,705.78 = 66,179.05/x
  3. Step 3: Cross multiply
    74,019.85x = 110,705.78 × 66,179.05
  4. Step 4: Simplify right side
    74,019.85x = 7,326,403,019.01
  5. Step 5: Solve for x
    x = 7,326,403,019.01/74,019.85
  6. Step 6: Final answer
    x = 98,978.90

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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.