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Finding the Fourth Proportional to 71,895.54, 107,844 and 19,305.03

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Solution

The fourth proportional to 71,895.54, 107,844 and 19,305.03 is: 28,957.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,895.54 : 107,844 = 19,305.03 : x
  2. Step 2: Convert to fraction form
    71,895.54/107,844 = 19,305.03/x
  3. Step 3: Cross multiply
    71,895.54x = 107,844 × 19,305.03
  4. Step 4: Simplify right side
    71,895.54x = 2,081,931,655.32
  5. Step 5: Solve for x
    x = 2,081,931,655.32/71,895.54
  6. Step 6: Final answer
    x = 28,957.73

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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.