Home / 72,763.38-100,405.44-40,931.73

Finding the Fourth Proportional to 72,763.38, 100,405.44 and 40,931.73

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Solution

The fourth proportional to 72,763.38, 100,405.44 and 40,931.73 is: 56,481.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,763.38 : 100,405.44 = 40,931.73 : x
  2. Step 2: Convert to fraction form
    72,763.38/100,405.44 = 40,931.73/x
  3. Step 3: Cross multiply
    72,763.38x = 100,405.44 × 40,931.73
  4. Step 4: Simplify right side
    72,763.38x = 4,109,768,360.61
  5. Step 5: Solve for x
    x = 4,109,768,360.61/72,763.38
  6. Step 6: Final answer
    x = 56,481.27

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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.