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Finding the Fourth Proportional to 140,647.53, 210,933.81 and 39,440.01

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Solution

The fourth proportional to 140,647.53, 210,933.81 and 39,440.01 is: 59,149.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,647.53 : 210,933.81 = 39,440.01 : x
  2. Step 2: Convert to fraction form
    140,647.53/210,933.81 = 39,440.01/x
  3. Step 3: Cross multiply
    140,647.53x = 210,933.81 × 39,440.01
  4. Step 4: Simplify right side
    140,647.53x = 8,319,231,575.74
  5. Step 5: Solve for x
    x = 8,319,231,575.74/140,647.53
  6. Step 6: Final answer
    x = 59,149.50

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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.