Home / 74,119.90-102,285.53-40,128.41

Finding the Fourth Proportional to 74,119.90, 102,285.53 and 40,128.41

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Solution

The fourth proportional to 74,119.90, 102,285.53 and 40,128.41 is: 55,377.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,119.90 : 102,285.53 = 40,128.41 : x
  2. Step 2: Convert to fraction form
    74,119.90/102,285.53 = 40,128.41/x
  3. Step 3: Cross multiply
    74,119.90x = 102,285.53 × 40,128.41
  4. Step 4: Simplify right side
    74,119.90x = 4,104,555,356.41
  5. Step 5: Solve for x
    x = 4,104,555,356.41/74,119.90
  6. Step 6: Final answer
    x = 55,377.24

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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.