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Finding the Fourth Proportional to 47,659.88, 71,372.70 and 39,288.68

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Solution

The fourth proportional to 47,659.88, 71,372.70 and 39,288.68 is: 58,836.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,659.88 : 71,372.70 = 39,288.68 : x
  2. Step 2: Convert to fraction form
    47,659.88/71,372.70 = 39,288.68/x
  3. Step 3: Cross multiply
    47,659.88x = 71,372.70 × 39,288.68
  4. Step 4: Simplify right side
    47,659.88x = 2,804,139,171.04
  5. Step 5: Solve for x
    x = 2,804,139,171.04/47,659.88
  6. Step 6: Final answer
    x = 58,836.47

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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.