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Finding the Fourth Proportional to 139,627.80, 209,449.80 and 39,795.30

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Solution

The fourth proportional to 139,627.80, 209,449.80 and 39,795.30 is: 59,695.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,627.80 : 209,449.80 = 39,795.30 : x
  2. Step 2: Convert to fraction form
    139,627.80/209,449.80 = 39,795.30/x
  3. Step 3: Cross multiply
    139,627.80x = 209,449.80 × 39,795.30
  4. Step 4: Simplify right side
    139,627.80x = 8,335,117,625.94
  5. Step 5: Solve for x
    x = 8,335,117,625.94/139,627.80
  6. Step 6: Final answer
    x = 59,695.26

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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.