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Finding the Fourth Proportional to 64,612.72, 96,919.08 and 20,239.63

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Solution

The fourth proportional to 64,612.72, 96,919.08 and 20,239.63 is: 30,359.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,612.72 : 96,919.08 = 20,239.63 : x
  2. Step 2: Convert to fraction form
    64,612.72/96,919.08 = 20,239.63/x
  3. Step 3: Cross multiply
    64,612.72x = 96,919.08 × 20,239.63
  4. Step 4: Simplify right side
    64,612.72x = 1,961,606,000.94
  5. Step 5: Solve for x
    x = 1,961,606,000.94/64,612.72
  6. Step 6: Final answer
    x = 30,359.44

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1.5x scale

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.