Home / 74,013.82-102,139.68-40,863.09

Finding the Fourth Proportional to 74,013.82, 102,139.68 and 40,863.09

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Solution

The fourth proportional to 74,013.82, 102,139.68 and 40,863.09 is: 56,391.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,013.82 : 102,139.68 = 40,863.09 : x
  2. Step 2: Convert to fraction form
    74,013.82/102,139.68 = 40,863.09/x
  3. Step 3: Cross multiply
    74,013.82x = 102,139.68 × 40,863.09
  4. Step 4: Simplify right side
    74,013.82x = 4,173,742,481.12
  5. Step 5: Solve for x
    x = 4,173,742,481.12/74,013.82
  6. Step 6: Final answer
    x = 56,391.40

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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.