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Finding the Fourth Proportional to 81,509.96, 112,532.82 and 53,262.92

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Solution

The fourth proportional to 81,509.96, 112,532.82 and 53,262.92 is: 73,534.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,509.96 : 112,532.82 = 53,262.92 : x
  2. Step 2: Convert to fraction form
    81,509.96/112,532.82 = 53,262.92/x
  3. Step 3: Cross multiply
    81,509.96x = 112,532.82 × 53,262.92
  4. Step 4: Simplify right side
    81,509.96x = 5,993,826,589.03
  5. Step 5: Solve for x
    x = 5,993,826,589.03/81,509.96
  6. Step 6: Final answer
    x = 73,534.90

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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.