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Finding the Fourth Proportional to 139,910.24, 209,835.44 and 40,043.62

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Solution

The fourth proportional to 139,910.24, 209,835.44 and 40,043.62 is: 60,056.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,910.24 : 209,835.44 = 40,043.62 : x
  2. Step 2: Convert to fraction form
    139,910.24/209,835.44 = 40,043.62/x
  3. Step 3: Cross multiply
    139,910.24x = 209,835.44 × 40,043.62
  4. Step 4: Simplify right side
    139,910.24x = 8,402,570,621.89
  5. Step 5: Solve for x
    x = 8,402,570,621.89/139,910.24
  6. Step 6: Final answer
    x = 60,056.87

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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.