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Finding the Fourth Proportional to 34,501.53, 51,621.08 and 21,321.21

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Solution

The fourth proportional to 34,501.53, 51,621.08 and 21,321.21 is: 31,900.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,501.53 : 51,621.08 = 21,321.21 : x
  2. Step 2: Convert to fraction form
    34,501.53/51,621.08 = 21,321.21/x
  3. Step 3: Cross multiply
    34,501.53x = 51,621.08 × 21,321.21
  4. Step 4: Simplify right side
    34,501.53x = 1,100,623,780.50
  5. Step 5: Solve for x
    x = 1,100,623,780.50/34,501.53
  6. Step 6: Final answer
    x = 31,900.72

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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.