Home / 78,382.41-117,493.08-30,978.24

Finding the Fourth Proportional to 78,382.41, 117,493.08 and 30,978.24

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Solution

The fourth proportional to 78,382.41, 117,493.08 and 30,978.24 is: 46,435.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,382.41 : 117,493.08 = 30,978.24 : x
  2. Step 2: Convert to fraction form
    78,382.41/117,493.08 = 30,978.24/x
  3. Step 3: Cross multiply
    78,382.41x = 117,493.08 × 30,978.24
  4. Step 4: Simplify right side
    78,382.41x = 3,639,728,830.58
  5. Step 5: Solve for x
    x = 3,639,728,830.58/78,382.41
  6. Step 6: Final answer
    x = 46,435.53

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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.