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Finding the Fourth Proportional to 58,768.82, 81,124.12 and 39,659.91

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Solution

The fourth proportional to 58,768.82, 81,124.12 and 39,659.91 is: 54,746.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,768.82 : 81,124.12 = 39,659.91 : x
  2. Step 2: Convert to fraction form
    58,768.82/81,124.12 = 39,659.91/x
  3. Step 3: Cross multiply
    58,768.82x = 81,124.12 × 39,659.91
  4. Step 4: Simplify right side
    58,768.82x = 3,217,375,043.39
  5. Step 5: Solve for x
    x = 3,217,375,043.39/58,768.82
  6. Step 6: Final answer
    x = 54,746.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.