Home / 81,315.60-121,930.02-41,309.94

Finding the Fourth Proportional to 81,315.60, 121,930.02 and 41,309.94

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Solution

The fourth proportional to 81,315.60, 121,930.02 and 41,309.94 is: 61,942.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,315.60 : 121,930.02 = 41,309.94 : x
  2. Step 2: Convert to fraction form
    81,315.60/121,930.02 = 41,309.94/x
  3. Step 3: Cross multiply
    81,315.60x = 121,930.02 × 41,309.94
  4. Step 4: Simplify right side
    81,315.60x = 5,036,921,810.40
  5. Step 5: Solve for x
    x = 5,036,921,810.40/81,315.60
  6. Step 6: Final answer
    x = 61,942.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.