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Finding the Fourth Proportional to 85,398.67, 117,875.19 and 49,604.77

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Solution

The fourth proportional to 85,398.67, 117,875.19 and 49,604.77 is: 68,469.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,398.67 : 117,875.19 = 49,604.77 : x
  2. Step 2: Convert to fraction form
    85,398.67/117,875.19 = 49,604.77/x
  3. Step 3: Cross multiply
    85,398.67x = 117,875.19 × 49,604.77
  4. Step 4: Simplify right side
    85,398.67x = 5,847,171,688.66
  5. Step 5: Solve for x
    x = 5,847,171,688.66/85,398.67
  6. Step 6: Final answer
    x = 68,469.12

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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.