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Finding the Fourth Proportional to 71,763.93, 99,036.96 and 39,932.16

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Solution

The fourth proportional to 71,763.93, 99,036.96 and 39,932.16 is: 55,107.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,763.93 : 99,036.96 = 39,932.16 : x
  2. Step 2: Convert to fraction form
    71,763.93/99,036.96 = 39,932.16/x
  3. Step 3: Cross multiply
    71,763.93x = 99,036.96 × 39,932.16
  4. Step 4: Simplify right side
    71,763.93x = 3,954,759,732.63
  5. Step 5: Solve for x
    x = 3,954,759,732.63/71,763.93
  6. Step 6: Final answer
    x = 55,107.90

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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.