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Finding the Fourth Proportional to 64,950.72, 97,428.84 and 20,576.49

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Solution

The fourth proportional to 64,950.72, 97,428.84 and 20,576.49 is: 30,865.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,950.72 : 97,428.84 = 20,576.49 : x
  2. Step 2: Convert to fraction form
    64,950.72/97,428.84 = 20,576.49/x
  3. Step 3: Cross multiply
    64,950.72x = 97,428.84 × 20,576.49
  4. Step 4: Simplify right side
    64,950.72x = 2,004,743,064.83
  5. Step 5: Solve for x
    x = 2,004,743,064.83/64,950.72
  6. Step 6: Final answer
    x = 30,865.60

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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.