Home / 78,293.38-117,439.75-28,361.79

Finding the Fourth Proportional to 78,293.38, 117,439.75 and 28,361.79

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Solution

The fourth proportional to 78,293.38, 117,439.75 and 28,361.79 is: 42,542.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,293.38 : 117,439.75 = 28,361.79 : x
  2. Step 2: Convert to fraction form
    78,293.38/117,439.75 = 28,361.79/x
  3. Step 3: Cross multiply
    78,293.38x = 117,439.75 × 28,361.79
  4. Step 4: Simplify right side
    78,293.38x = 3,330,800,798.14
  5. Step 5: Solve for x
    x = 3,330,800,798.14/78,293.38
  6. Step 6: Final answer
    x = 42,542.56

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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.