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Finding the Fourth Proportional to 85,274.60, 127,900.70 and 26,116.20

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Solution

The fourth proportional to 85,274.60, 127,900.70 and 26,116.20 is: 39,170.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,274.60 : 127,900.70 = 26,116.20 : x
  2. Step 2: Convert to fraction form
    85,274.60/127,900.70 = 26,116.20/x
  3. Step 3: Cross multiply
    85,274.60x = 127,900.70 × 26,116.20
  4. Step 4: Simplify right side
    85,274.60x = 3,340,280,261.34
  5. Step 5: Solve for x
    x = 3,340,280,261.34/85,274.60
  6. Step 6: Final answer
    x = 39,170.87

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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.