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Finding the Fourth Proportional to 139,880.44, 209,820.66 and 40,040.98

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Solution

The fourth proportional to 139,880.44, 209,820.66 and 40,040.98 is: 60,061.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,880.44 : 209,820.66 = 40,040.98 : x
  2. Step 2: Convert to fraction form
    139,880.44/209,820.66 = 40,040.98/x
  3. Step 3: Cross multiply
    139,880.44x = 209,820.66 × 40,040.98
  4. Step 4: Simplify right side
    139,880.44x = 8,401,425,581.41
  5. Step 5: Solve for x
    x = 8,401,425,581.41/139,880.44
  6. Step 6: Final answer
    x = 60,061.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.