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Finding the Fourth Proportional to 81,758.88, 112,820.74 and 45,942.16

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Solution

The fourth proportional to 81,758.88, 112,820.74 and 45,942.16 is: 63,396.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,758.88 : 112,820.74 = 45,942.16 : x
  2. Step 2: Convert to fraction form
    81,758.88/112,820.74 = 45,942.16/x
  3. Step 3: Cross multiply
    81,758.88x = 112,820.74 × 45,942.16
  4. Step 4: Simplify right side
    81,758.88x = 5,183,228,488.40
  5. Step 5: Solve for x
    x = 5,183,228,488.40/81,758.88
  6. Step 6: Final answer
    x = 63,396.52

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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.