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Finding the Fourth Proportional to 69,042.68, 103,667.70 and 39,493.88

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Solution

The fourth proportional to 69,042.68, 103,667.70 and 39,493.88 is: 59,300.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,042.68 : 103,667.70 = 39,493.88 : x
  2. Step 2: Convert to fraction form
    69,042.68/103,667.70 = 39,493.88/x
  3. Step 3: Cross multiply
    69,042.68x = 103,667.70 × 39,493.88
  4. Step 4: Simplify right side
    69,042.68x = 4,094,239,703.68
  5. Step 5: Solve for x
    x = 4,094,239,703.68/69,042.68
  6. Step 6: Final answer
    x = 59,300.13

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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.