Home / 74,372.83-102,635.73-40,381.31

Finding the Fourth Proportional to 74,372.83, 102,635.73 and 40,381.31

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Solution

The fourth proportional to 74,372.83, 102,635.73 and 40,381.31 is: 55,726.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,372.83 : 102,635.73 = 40,381.31 : x
  2. Step 2: Convert to fraction form
    74,372.83/102,635.73 = 40,381.31/x
  3. Step 3: Cross multiply
    74,372.83x = 102,635.73 × 40,381.31
  4. Step 4: Simplify right side
    74,372.83x = 4,144,565,230.21
  5. Step 5: Solve for x
    x = 4,144,565,230.21/74,372.83
  6. Step 6: Final answer
    x = 55,726.87

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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.