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Finding the Fourth Proportional to 74,042.80, 102,181.41 and 40,508.80

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Solution

The fourth proportional to 74,042.80, 102,181.41 and 40,508.80 is: 55,903.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,042.80 : 102,181.41 = 40,508.80 : x
  2. Step 2: Convert to fraction form
    74,042.80/102,181.41 = 40,508.80/x
  3. Step 3: Cross multiply
    74,042.80x = 102,181.41 × 40,508.80
  4. Step 4: Simplify right side
    74,042.80x = 4,139,245,587.96
  5. Step 5: Solve for x
    x = 4,139,245,587.96/74,042.80
  6. Step 6: Final answer
    x = 55,903.42

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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.