Home / 72,833.25-100,512.62-40,129.01

Finding the Fourth Proportional to 72,833.25, 100,512.62 and 40,129.01

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Solution

The fourth proportional to 72,833.25, 100,512.62 and 40,129.01 is: 55,379.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,833.25 : 100,512.62 = 40,129.01 : x
  2. Step 2: Convert to fraction form
    72,833.25/100,512.62 = 40,129.01/x
  3. Step 3: Cross multiply
    72,833.25x = 100,512.62 × 40,129.01
  4. Step 4: Simplify right side
    72,833.25x = 4,033,472,280.23
  5. Step 5: Solve for x
    x = 4,033,472,280.23/72,833.25
  6. Step 6: Final answer
    x = 55,379.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.