Home / 78,414.24-117,621.36-28,485.04

Finding the Fourth Proportional to 78,414.24, 117,621.36 and 28,485.04

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Solution

The fourth proportional to 78,414.24, 117,621.36 and 28,485.04 is: 42,727.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,414.24 : 117,621.36 = 28,485.04 : x
  2. Step 2: Convert to fraction form
    78,414.24/117,621.36 = 28,485.04/x
  3. Step 3: Cross multiply
    78,414.24x = 117,621.36 × 28,485.04
  4. Step 4: Simplify right side
    78,414.24x = 3,350,449,144.45
  5. Step 5: Solve for x
    x = 3,350,449,144.45/78,414.24
  6. Step 6: Final answer
    x = 42,727.56

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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.