Home / 78,728.37-118,049.19-53,796.57

Finding the Fourth Proportional to 78,728.37, 118,049.19 and 53,796.57

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Solution

The fourth proportional to 78,728.37, 118,049.19 and 53,796.57 is: 80,665.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,728.37 : 118,049.19 = 53,796.57 : x
  2. Step 2: Convert to fraction form
    78,728.37/118,049.19 = 53,796.57/x
  3. Step 3: Cross multiply
    78,728.37x = 118,049.19 × 53,796.57
  4. Step 4: Simplify right side
    78,728.37x = 6,350,641,513.28
  5. Step 5: Solve for x
    x = 6,350,641,513.28/78,728.37
  6. Step 6: Final answer
    x = 80,665.22

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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.