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Finding the Fourth Proportional to 72,722.40, 100,313.40 and 44,378.88

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Solution

The fourth proportional to 72,722.40, 100,313.40 and 44,378.88 is: 61,216.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,722.40 : 100,313.40 = 44,378.88 : x
  2. Step 2: Convert to fraction form
    72,722.40/100,313.40 = 44,378.88/x
  3. Step 3: Cross multiply
    72,722.40x = 100,313.40 × 44,378.88
  4. Step 4: Simplify right side
    72,722.40x = 4,451,796,340.99
  5. Step 5: Solve for x
    x = 4,451,796,340.99/72,722.40
  6. Step 6: Final answer
    x = 61,216.30

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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.