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Finding the Fourth Proportional to 84,884.90, 127,181.55 and 40,415.90

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Solution

The fourth proportional to 84,884.90, 127,181.55 and 40,415.90 is: 60,554.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,884.90 : 127,181.55 = 40,415.90 : x
  2. Step 2: Convert to fraction form
    84,884.90/127,181.55 = 40,415.90/x
  3. Step 3: Cross multiply
    84,884.90x = 127,181.55 × 40,415.90
  4. Step 4: Simplify right side
    84,884.90x = 5,140,156,806.65
  5. Step 5: Solve for x
    x = 5,140,156,806.65/84,884.90
  6. Step 6: Final answer
    x = 60,554.43

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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.