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Finding the Fourth Proportional to 64,754.86, 97,139.25 and 20,382.94

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Solution

The fourth proportional to 64,754.86, 97,139.25 and 20,382.94 is: 30,576.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,754.86 : 97,139.25 = 20,382.94 : x
  2. Step 2: Convert to fraction form
    64,754.86/97,139.25 = 20,382.94/x
  3. Step 3: Cross multiply
    64,754.86x = 97,139.25 × 20,382.94
  4. Step 4: Simplify right side
    64,754.86x = 1,979,983,504.40
  5. Step 5: Solve for x
    x = 1,979,983,504.40/64,754.86
  6. Step 6: Final answer
    x = 30,576.60

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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.