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Finding the Fourth Proportional to 85,204.80, 117,583.02 and 48,903.30

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Solution

The fourth proportional to 85,204.80, 117,583.02 and 48,903.30 is: 67,486.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,204.80 : 117,583.02 = 48,903.30 : x
  2. Step 2: Convert to fraction form
    85,204.80/117,583.02 = 48,903.30/x
  3. Step 3: Cross multiply
    85,204.80x = 117,583.02 × 48,903.30
  4. Step 4: Simplify right side
    85,204.80x = 5,750,197,701.97
  5. Step 5: Solve for x
    x = 5,750,197,701.97/85,204.80
  6. Step 6: Final answer
    x = 67,486.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.