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Finding the Fourth Proportional to 64,397.72, 96,602.72 and 20,012.52

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Solution

The fourth proportional to 64,397.72, 96,602.72 and 20,012.52 is: 30,020.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,397.72 : 96,602.72 = 20,012.52 : x
  2. Step 2: Convert to fraction form
    64,397.72/96,602.72 = 20,012.52/x
  3. Step 3: Cross multiply
    64,397.72x = 96,602.72 × 20,012.52
  4. Step 4: Simplify right side
    64,397.72x = 1,933,263,866.05
  5. Step 5: Solve for x
    x = 1,933,263,866.05/64,397.72
  6. Step 6: Final answer
    x = 30,020.69

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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.