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Finding the Fourth Proportional to 72,635.91, 100,237.58 and 40,370.54

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Solution

The fourth proportional to 72,635.91, 100,237.58 and 40,370.54 is: 55,711.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,635.91 : 100,237.58 = 40,370.54 : x
  2. Step 2: Convert to fraction form
    72,635.91/100,237.58 = 40,370.54/x
  3. Step 3: Cross multiply
    72,635.91x = 100,237.58 × 40,370.54
  4. Step 4: Simplify right side
    72,635.91x = 4,046,644,529.85
  5. Step 5: Solve for x
    x = 4,046,644,529.85/72,635.91
  6. Step 6: Final answer
    x = 55,711.35

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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.