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Finding the Fourth Proportional to 58,382.87, 87,586.61 and 18,936.91

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Solution

The fourth proportional to 58,382.87, 87,586.61 and 18,936.91 is: 28,409.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,382.87 : 87,586.61 = 18,936.91 : x
  2. Step 2: Convert to fraction form
    58,382.87/87,586.61 = 18,936.91/x
  3. Step 3: Cross multiply
    58,382.87x = 87,586.61 × 18,936.91
  4. Step 4: Simplify right side
    58,382.87x = 1,658,619,218.16
  5. Step 5: Solve for x
    x = 1,658,619,218.16/58,382.87
  6. Step 6: Final answer
    x = 28,409.35

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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.