Home / 72,190.85-99,626.36-40,359.67

Finding the Fourth Proportional to 72,190.85, 99,626.36 and 40,359.67

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Solution

The fourth proportional to 72,190.85, 99,626.36 and 40,359.67 is: 55,698.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,190.85 : 99,626.36 = 40,359.67 : x
  2. Step 2: Convert to fraction form
    72,190.85/99,626.36 = 40,359.67/x
  3. Step 3: Cross multiply
    72,190.85x = 99,626.36 × 40,359.67
  4. Step 4: Simplify right side
    72,190.85x = 4,020,886,562.04
  5. Step 5: Solve for x
    x = 4,020,886,562.04/72,190.85
  6. Step 6: Final answer
    x = 55,698.01

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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.