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Finding the Fourth Proportional to 74,371.96, 102,630.22 and 40,379.12

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Solution

The fourth proportional to 74,371.96, 102,630.22 and 40,379.12 is: 55,721.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,371.96 : 102,630.22 = 40,379.12 : x
  2. Step 2: Convert to fraction form
    74,371.96/102,630.22 = 40,379.12/x
  3. Step 3: Cross multiply
    74,371.96x = 102,630.22 × 40,379.12
  4. Step 4: Simplify right side
    74,371.96x = 4,144,117,969.01
  5. Step 5: Solve for x
    x = 4,144,117,969.01/74,371.96
  6. Step 6: Final answer
    x = 55,721.51

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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.