Home / 74,622.92-102,976.16-40,631.30

Finding the Fourth Proportional to 74,622.92, 102,976.16 and 40,631.30

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Solution

The fourth proportional to 74,622.92, 102,976.16 and 40,631.30 is: 56,069.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,622.92 : 102,976.16 = 40,631.30 : x
  2. Step 2: Convert to fraction form
    74,622.92/102,976.16 = 40,631.30/x
  3. Step 3: Cross multiply
    74,622.92x = 102,976.16 × 40,631.30
  4. Step 4: Simplify right side
    74,622.92x = 4,184,055,249.81
  5. Step 5: Solve for x
    x = 4,184,055,249.81/74,622.92
  6. Step 6: Final answer
    x = 56,069.30

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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.