Home / 74,371.83-102,634.35-40,380.31

Finding the Fourth Proportional to 74,371.83, 102,634.35 and 40,380.31

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Solution

The fourth proportional to 74,371.83, 102,634.35 and 40,380.31 is: 55,725.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,371.83 : 102,634.35 = 40,380.31 : x
  2. Step 2: Convert to fraction form
    74,371.83/102,634.35 = 40,380.31/x
  3. Step 3: Cross multiply
    74,371.83x = 102,634.35 × 40,380.31
  4. Step 4: Simplify right side
    74,371.83x = 4,144,406,869.65
  5. Step 5: Solve for x
    x = 4,144,406,869.65/74,371.83
  6. Step 6: Final answer
    x = 55,725.49

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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.