Home / 72,003.62-99,369.77-40,173.20

Finding the Fourth Proportional to 72,003.62, 99,369.77 and 40,173.20

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Solution

The fourth proportional to 72,003.62, 99,369.77 and 40,173.20 is: 55,441.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,003.62 : 99,369.77 = 40,173.20 : x
  2. Step 2: Convert to fraction form
    72,003.62/99,369.77 = 40,173.20/x
  3. Step 3: Cross multiply
    72,003.62x = 99,369.77 × 40,173.20
  4. Step 4: Simplify right side
    72,003.62x = 3,992,000,946.45
  5. Step 5: Solve for x
    x = 3,992,000,946.45/72,003.62
  6. Step 6: Final answer
    x = 55,441.67

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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.