Home / 74,078.40-102,224.16-40,537.92

Finding the Fourth Proportional to 74,078.40, 102,224.16 and 40,537.92

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Solution

The fourth proportional to 74,078.40, 102,224.16 and 40,537.92 is: 55,940.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,078.40 : 102,224.16 = 40,537.92 : x
  2. Step 2: Convert to fraction form
    74,078.40/102,224.16 = 40,537.92/x
  3. Step 3: Cross multiply
    74,078.40x = 102,224.16 × 40,537.92
  4. Step 4: Simplify right side
    74,078.40x = 4,143,954,820.15
  5. Step 5: Solve for x
    x = 4,143,954,820.15/74,078.40
  6. Step 6: Final answer
    x = 55,940.12

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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.