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Finding the Fourth Proportional to 61,890.08, 92,820.22 and 28,578.11

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Solution

The fourth proportional to 61,890.08, 92,820.22 and 28,578.11 is: 42,860.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,890.08 : 92,820.22 = 28,578.11 : x
  2. Step 2: Convert to fraction form
    61,890.08/92,820.22 = 28,578.11/x
  3. Step 3: Cross multiply
    61,890.08x = 92,820.22 × 28,578.11
  4. Step 4: Simplify right side
    61,890.08x = 2,652,625,921.84
  5. Step 5: Solve for x
    x = 2,652,625,921.84/61,890.08
  6. Step 6: Final answer
    x = 42,860.28

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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.