Home / 74,621.85-102,980.67-40,631.65

Finding the Fourth Proportional to 74,621.85, 102,980.67 and 40,631.65

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Solution

The fourth proportional to 74,621.85, 102,980.67 and 40,631.65 is: 56,073.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,621.85 : 102,980.67 = 40,631.65 : x
  2. Step 2: Convert to fraction form
    74,621.85/102,980.67 = 40,631.65/x
  3. Step 3: Cross multiply
    74,621.85x = 102,980.67 × 40,631.65
  4. Step 4: Simplify right side
    74,621.85x = 4,184,274,540.21
  5. Step 5: Solve for x
    x = 4,184,274,540.21/74,621.85
  6. Step 6: Final answer
    x = 56,073.05

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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.