Home / 74,193.88-102,388.40-40,660.12

Finding the Fourth Proportional to 74,193.88, 102,388.40 and 40,660.12

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Solution

The fourth proportional to 74,193.88, 102,388.40 and 40,660.12 is: 56,111.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,193.88 : 102,388.40 = 40,660.12 : x
  2. Step 2: Convert to fraction form
    74,193.88/102,388.40 = 40,660.12/x
  3. Step 3: Cross multiply
    74,193.88x = 102,388.40 × 40,660.12
  4. Step 4: Simplify right side
    74,193.88x = 4,163,124,630.61
  5. Step 5: Solve for x
    x = 4,163,124,630.61/74,193.88
  6. Step 6: Final answer
    x = 56,111.43

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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.