Home / 81,257.88-112,136.14-45,448.50

Finding the Fourth Proportional to 81,257.88, 112,136.14 and 45,448.50

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Solution

The fourth proportional to 81,257.88, 112,136.14 and 45,448.50 is: 62,719.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,257.88 : 112,136.14 = 45,448.50 : x
  2. Step 2: Convert to fraction form
    81,257.88/112,136.14 = 45,448.50/x
  3. Step 3: Cross multiply
    81,257.88x = 112,136.14 × 45,448.50
  4. Step 4: Simplify right side
    81,257.88x = 5,096,419,358.79
  5. Step 5: Solve for x
    x = 5,096,419,358.79/81,257.88
  6. Step 6: Final answer
    x = 62,719.08

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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.