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Finding the Fourth Proportional to 52,855, 79,282.50 and 15,919

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Solution

The fourth proportional to 52,855, 79,282.50 and 15,919 is: 23,878.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,855 : 79,282.50 = 15,919 : x
  2. Step 2: Convert to fraction form
    52,855/79,282.50 = 15,919/x
  3. Step 3: Cross multiply
    52,855x = 79,282.50 × 15,919
  4. Step 4: Simplify right side
    52,855x = 1,262,098,117.50
  5. Step 5: Solve for x
    x = 1,262,098,117.50/52,855
  6. Step 6: Final answer
    x = 23,878.50

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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.