Home / 81,396.64-112,329.84-45,586.56

Finding the Fourth Proportional to 81,396.64, 112,329.84 and 45,586.56

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Solution

The fourth proportional to 81,396.64, 112,329.84 and 45,586.56 is: 62,910.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,396.64 : 112,329.84 = 45,586.56 : x
  2. Step 2: Convert to fraction form
    81,396.64/112,329.84 = 45,586.56/x
  3. Step 3: Cross multiply
    81,396.64x = 112,329.84 × 45,586.56
  4. Step 4: Simplify right side
    81,396.64x = 5,120,730,990.95
  5. Step 5: Solve for x
    x = 5,120,730,990.95/81,396.64
  6. Step 6: Final answer
    x = 62,910.84

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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.