Home / 72,004.08-99,370.62-40,179.18

Finding the Fourth Proportional to 72,004.08, 99,370.62 and 40,179.18

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Solution

The fourth proportional to 72,004.08, 99,370.62 and 40,179.18 is: 55,450.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,004.08 : 99,370.62 = 40,179.18 : x
  2. Step 2: Convert to fraction form
    72,004.08/99,370.62 = 40,179.18/x
  3. Step 3: Cross multiply
    72,004.08x = 99,370.62 × 40,179.18
  4. Step 4: Simplify right side
    72,004.08x = 3,992,630,027.69
  5. Step 5: Solve for x
    x = 3,992,630,027.69/72,004.08
  6. Step 6: Final answer
    x = 55,450.05

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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.