Home / 74,212.82-102,409.89-40,672.34

Finding the Fourth Proportional to 74,212.82, 102,409.89 and 40,672.34

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Solution

The fourth proportional to 74,212.82, 102,409.89 and 40,672.34 is: 56,125.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,212.82 : 102,409.89 = 40,672.34 : x
  2. Step 2: Convert to fraction form
    74,212.82/102,409.89 = 40,672.34/x
  3. Step 3: Cross multiply
    74,212.82x = 102,409.89 × 40,672.34
  4. Step 4: Simplify right side
    74,212.82x = 4,165,249,865.44
  5. Step 5: Solve for x
    x = 4,165,249,865.44/74,212.82
  6. Step 6: Final answer
    x = 56,125.75

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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.