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Finding the Fourth Proportional to 139,941.48, 209,911.44 and 34,760.40

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Solution

The fourth proportional to 139,941.48, 209,911.44 and 34,760.40 is: 52,140.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,941.48 : 209,911.44 = 34,760.40 : x
  2. Step 2: Convert to fraction form
    139,941.48/209,911.44 = 34,760.40/x
  3. Step 3: Cross multiply
    139,941.48x = 209,911.44 × 34,760.40
  4. Step 4: Simplify right side
    139,941.48x = 7,296,605,618.98
  5. Step 5: Solve for x
    x = 7,296,605,618.98/139,941.48
  6. Step 6: Final answer
    x = 52,140.41

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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.