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Finding the Fourth Proportional to 61,890.25, 92,820.44 and 28,578.29

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Solution

The fourth proportional to 61,890.25, 92,820.44 and 28,578.29 is: 42,860.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,890.25 : 92,820.44 = 28,578.29 : x
  2. Step 2: Convert to fraction form
    61,890.25/92,820.44 = 28,578.29/x
  3. Step 3: Cross multiply
    61,890.25x = 92,820.44 × 28,578.29
  4. Step 4: Simplify right side
    61,890.25x = 2,652,649,309.36
  5. Step 5: Solve for x
    x = 2,652,649,309.36/61,890.25
  6. Step 6: Final answer
    x = 42,860.54

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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.