Home / 74,002.21-102,124.17-42,170.42

Finding the Fourth Proportional to 74,002.21, 102,124.17 and 42,170.42

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Solution

The fourth proportional to 74,002.21, 102,124.17 and 42,170.42 is: 58,195.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,002.21 : 102,124.17 = 42,170.42 : x
  2. Step 2: Convert to fraction form
    74,002.21/102,124.17 = 42,170.42/x
  3. Step 3: Cross multiply
    74,002.21x = 102,124.17 × 42,170.42
  4. Step 4: Simplify right side
    74,002.21x = 4,306,619,396.36
  5. Step 5: Solve for x
    x = 4,306,619,396.36/74,002.21
  6. Step 6: Final answer
    x = 58,195.82

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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.