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Finding the Fourth Proportional to 85,161.89, 127,797.51 and 57,113.62

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Solution

The fourth proportional to 85,161.89, 127,797.51 and 57,113.62 is: 85,707.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,161.89 : 127,797.51 = 57,113.62 : x
  2. Step 2: Convert to fraction form
    85,161.89/127,797.51 = 57,113.62/x
  3. Step 3: Cross multiply
    85,161.89x = 127,797.51 × 57,113.62
  4. Step 4: Simplify right side
    85,161.89x = 7,298,977,784.10
  5. Step 5: Solve for x
    x = 7,298,977,784.10/85,161.89
  6. Step 6: Final answer
    x = 85,707.09

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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.