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Finding the Fourth Proportional to 52,881.25, 72,974.79 and 30,218.80

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Solution

The fourth proportional to 52,881.25, 72,974.79 and 30,218.80 is: 41,701.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,881.25 : 72,974.79 = 30,218.80 : x
  2. Step 2: Convert to fraction form
    52,881.25/72,974.79 = 30,218.80/x
  3. Step 3: Cross multiply
    52,881.25x = 72,974.79 × 30,218.80
  4. Step 4: Simplify right side
    52,881.25x = 2,205,210,584.05
  5. Step 5: Solve for x
    x = 2,205,210,584.05/52,881.25
  6. Step 6: Final answer
    x = 41,701.18

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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.