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Finding the Fourth Proportional to 85,114.90, 127,687.56 and 28,952.14

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Solution

The fourth proportional to 85,114.90, 127,687.56 and 28,952.14 is: 43,433.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,114.90 : 127,687.56 = 28,952.14 : x
  2. Step 2: Convert to fraction form
    85,114.90/127,687.56 = 28,952.14/x
  3. Step 3: Cross multiply
    85,114.90x = 127,687.56 × 28,952.14
  4. Step 4: Simplify right side
    85,114.90x = 3,696,828,113.38
  5. Step 5: Solve for x
    x = 3,696,828,113.38/85,114.90
  6. Step 6: Final answer
    x = 43,433.38

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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.