Home / 78,617.10-117,926.82-43,778.19

Finding the Fourth Proportional to 78,617.10, 117,926.82 and 43,778.19

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Solution

The fourth proportional to 78,617.10, 117,926.82 and 43,778.19 is: 65,667.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,617.10 : 117,926.82 = 43,778.19 : x
  2. Step 2: Convert to fraction form
    78,617.10/117,926.82 = 43,778.19/x
  3. Step 3: Cross multiply
    78,617.10x = 117,926.82 × 43,778.19
  4. Step 4: Simplify right side
    78,617.10x = 5,162,622,732.06
  5. Step 5: Solve for x
    x = 5,162,622,732.06/78,617.10
  6. Step 6: Final answer
    x = 65,667.94

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1.5x scale

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.