Home / 72,003.08-99,369.24-40,178.18

Finding the Fourth Proportional to 72,003.08, 99,369.24 and 40,178.18

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Solution

The fourth proportional to 72,003.08, 99,369.24 and 40,178.18 is: 55,448.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,003.08 : 99,369.24 = 40,178.18 : x
  2. Step 2: Convert to fraction form
    72,003.08/99,369.24 = 40,178.18/x
  3. Step 3: Cross multiply
    72,003.08x = 99,369.24 × 40,178.18
  4. Step 4: Simplify right side
    72,003.08x = 3,992,475,211.18
  5. Step 5: Solve for x
    x = 3,992,475,211.18/72,003.08
  6. Step 6: Final answer
    x = 55,448.67

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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.