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Finding the Fourth Proportional to 55,216.61, 82,849.49 and 28,915.19

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Solution

The fourth proportional to 55,216.61, 82,849.49 and 28,915.19 is: 43,385.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,216.61 : 82,849.49 = 28,915.19 : x
  2. Step 2: Convert to fraction form
    55,216.61/82,849.49 = 28,915.19/x
  3. Step 3: Cross multiply
    55,216.61x = 82,849.49 × 28,915.19
  4. Step 4: Simplify right side
    55,216.61x = 2,395,608,744.75
  5. Step 5: Solve for x
    x = 2,395,608,744.75/55,216.61
  6. Step 6: Final answer
    x = 43,385.65

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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.