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Finding the Fourth Proportional to 84,692.75, 127,058.29 and 28,531.32

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Solution

The fourth proportional to 84,692.75, 127,058.29 and 28,531.32 is: 42,803.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,692.75 : 127,058.29 = 28,531.32 : x
  2. Step 2: Convert to fraction form
    84,692.75/127,058.29 = 28,531.32/x
  3. Step 3: Cross multiply
    84,692.75x = 127,058.29 × 28,531.32
  4. Step 4: Simplify right side
    84,692.75x = 3,625,140,766.31
  5. Step 5: Solve for x
    x = 3,625,140,766.31/84,692.75
  6. Step 6: Final answer
    x = 42,803.44

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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.