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Finding the Fourth Proportional to 81,589.96, 112,595.86 and 45,782.56

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Solution

The fourth proportional to 81,589.96, 112,595.86 and 45,782.56 is: 63,180.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,589.96 : 112,595.86 = 45,782.56 : x
  2. Step 2: Convert to fraction form
    81,589.96/112,595.86 = 45,782.56/x
  3. Step 3: Cross multiply
    81,589.96x = 112,595.86 × 45,782.56
  4. Step 4: Simplify right side
    81,589.96x = 5,154,926,716.20
  5. Step 5: Solve for x
    x = 5,154,926,716.20/81,589.96
  6. Step 6: Final answer
    x = 63,180.90

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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.