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Finding the Fourth Proportional to 58,517.82, 87,724.02 and 21,051.55

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Solution

The fourth proportional to 58,517.82, 87,724.02 and 21,051.55 is: 31,558.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,517.82 : 87,724.02 = 21,051.55 : x
  2. Step 2: Convert to fraction form
    58,517.82/87,724.02 = 21,051.55/x
  3. Step 3: Cross multiply
    58,517.82x = 87,724.02 × 21,051.55
  4. Step 4: Simplify right side
    58,517.82x = 1,846,726,373.92
  5. Step 5: Solve for x
    x = 1,846,726,373.92/58,517.82
  6. Step 6: Final answer
    x = 31,558.36

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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.