Home / 91,989.10-126,950.79-60,243.58

Finding the Fourth Proportional to 91,989.10, 126,950.79 and 60,243.58

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Solution

The fourth proportional to 91,989.10, 126,950.79 and 60,243.58 is: 83,139.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,989.10 : 126,950.79 = 60,243.58 : x
  2. Step 2: Convert to fraction form
    91,989.10/126,950.79 = 60,243.58/x
  3. Step 3: Cross multiply
    91,989.10x = 126,950.79 × 60,243.58
  4. Step 4: Simplify right side
    91,989.10x = 7,647,970,073.43
  5. Step 5: Solve for x
    x = 7,647,970,073.43/91,989.10
  6. Step 6: Final answer
    x = 83,139.96

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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.