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Finding the Fourth Proportional to 72,719.98, 100,270.84 and 51,202.85

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Solution

The fourth proportional to 72,719.98, 100,270.84 and 51,202.85 is: 70,601.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,719.98 : 100,270.84 = 51,202.85 : x
  2. Step 2: Convert to fraction form
    72,719.98/100,270.84 = 51,202.85/x
  3. Step 3: Cross multiply
    72,719.98x = 100,270.84 × 51,202.85
  4. Step 4: Simplify right side
    72,719.98x = 5,134,152,523.88
  5. Step 5: Solve for x
    x = 5,134,152,523.88/72,719.98
  6. Step 6: Final answer
    x = 70,601.68

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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.