Home / 74,712.78-103,102.34-40,721.58

Finding the Fourth Proportional to 74,712.78, 103,102.34 and 40,721.58

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Solution

The fourth proportional to 74,712.78, 103,102.34 and 40,721.58 is: 56,195.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,712.78 : 103,102.34 = 40,721.58 : x
  2. Step 2: Convert to fraction form
    74,712.78/103,102.34 = 40,721.58/x
  3. Step 3: Cross multiply
    74,712.78x = 103,102.34 × 40,721.58
  4. Step 4: Simplify right side
    74,712.78x = 4,198,489,982.89
  5. Step 5: Solve for x
    x = 4,198,489,982.89/74,712.78
  6. Step 6: Final answer
    x = 56,195.07

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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.