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Finding the Fourth Proportional to 81,136.55, 111,974.49 and 46,691.84

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Solution

The fourth proportional to 81,136.55, 111,974.49 and 46,691.84 is: 64,438.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,136.55 : 111,974.49 = 46,691.84 : x
  2. Step 2: Convert to fraction form
    81,136.55/111,974.49 = 46,691.84/x
  3. Step 3: Cross multiply
    81,136.55x = 111,974.49 × 46,691.84
  4. Step 4: Simplify right side
    81,136.55x = 5,228,294,411.29
  5. Step 5: Solve for x
    x = 5,228,294,411.29/81,136.55
  6. Step 6: Final answer
    x = 64,438.22

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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.