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Finding the Fourth Proportional to 52,855.68, 72,940.22 and 28,982.15

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Solution

The fourth proportional to 52,855.68, 72,940.22 and 28,982.15 is: 39,995.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,855.68 : 72,940.22 = 28,982.15 : x
  2. Step 2: Convert to fraction form
    52,855.68/72,940.22 = 28,982.15/x
  3. Step 3: Cross multiply
    52,855.68x = 72,940.22 × 28,982.15
  4. Step 4: Simplify right side
    52,855.68x = 2,113,963,887.46
  5. Step 5: Solve for x
    x = 2,113,963,887.46/52,855.68
  6. Step 6: Final answer
    x = 39,995.02

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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.