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Finding the Fourth Proportional to 42,696.99, 64,078.16 and 19,339.83

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Solution

The fourth proportional to 42,696.99, 64,078.16 and 19,339.83 is: 29,024.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,696.99 : 64,078.16 = 19,339.83 : x
  2. Step 2: Convert to fraction form
    42,696.99/64,078.16 = 19,339.83/x
  3. Step 3: Cross multiply
    42,696.99x = 64,078.16 × 19,339.83
  4. Step 4: Simplify right side
    42,696.99x = 1,239,260,624.41
  5. Step 5: Solve for x
    x = 1,239,260,624.41/42,696.99
  6. Step 6: Final answer
    x = 29,024.54

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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.