Home / 74,370.96-102,628.84-40,378.12

Finding the Fourth Proportional to 74,370.96, 102,628.84 and 40,378.12

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Solution

The fourth proportional to 74,370.96, 102,628.84 and 40,378.12 is: 55,720.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,370.96 : 102,628.84 = 40,378.12 : x
  2. Step 2: Convert to fraction form
    74,370.96/102,628.84 = 40,378.12/x
  3. Step 3: Cross multiply
    74,370.96x = 102,628.84 × 40,378.12
  4. Step 4: Simplify right side
    74,370.96x = 4,143,959,616.98
  5. Step 5: Solve for x
    x = 4,143,959,616.98/74,370.96
  6. Step 6: Final answer
    x = 55,720.13

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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.