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Finding the Fourth Proportional to 47,479.38, 71,218.89 and 19,393.38

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Solution

The fourth proportional to 47,479.38, 71,218.89 and 19,393.38 is: 29,090.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,479.38 : 71,218.89 = 19,393.38 : x
  2. Step 2: Convert to fraction form
    47,479.38/71,218.89 = 19,393.38/x
  3. Step 3: Cross multiply
    47,479.38x = 71,218.89 × 19,393.38
  4. Step 4: Simplify right side
    47,479.38x = 1,381,174,996.95
  5. Step 5: Solve for x
    x = 1,381,174,996.95/47,479.38
  6. Step 6: Final answer
    x = 29,090.00

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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.