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Finding the Fourth Proportional to 71,758.38, 99,015.36 and 39,927.18

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Solution

The fourth proportional to 71,758.38, 99,015.36 and 39,927.18 is: 55,093.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,758.38 : 99,015.36 = 39,927.18 : x
  2. Step 2: Convert to fraction form
    71,758.38/99,015.36 = 39,927.18/x
  3. Step 3: Cross multiply
    71,758.38x = 99,015.36 × 39,927.18
  4. Step 4: Simplify right side
    71,758.38x = 3,953,404,101.48
  5. Step 5: Solve for x
    x = 3,953,404,101.48/71,758.38
  6. Step 6: Final answer
    x = 55,093.27

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1.5x scale

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.