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Finding the Fourth Proportional to 64,039.38, 96,074.19 and 21,919.98

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Solution

The fourth proportional to 64,039.38, 96,074.19 and 21,919.98 is: 32,885.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,039.38 : 96,074.19 = 21,919.98 : x
  2. Step 2: Convert to fraction form
    64,039.38/96,074.19 = 21,919.98/x
  3. Step 3: Cross multiply
    64,039.38x = 96,074.19 × 21,919.98
  4. Step 4: Simplify right side
    64,039.38x = 2,105,944,323.32
  5. Step 5: Solve for x
    x = 2,105,944,323.32/64,039.38
  6. Step 6: Final answer
    x = 32,885.15

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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.