Home / 81,421.07-121,951.16-62,562.29

Finding the Fourth Proportional to 81,421.07, 121,951.16 and 62,562.29

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Solution

The fourth proportional to 81,421.07, 121,951.16 and 62,562.29 is: 93,704.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,421.07 : 121,951.16 = 62,562.29 : x
  2. Step 2: Convert to fraction form
    81,421.07/121,951.16 = 62,562.29/x
  3. Step 3: Cross multiply
    81,421.07x = 121,951.16 × 62,562.29
  4. Step 4: Simplify right side
    81,421.07x = 7,629,543,524.94
  5. Step 5: Solve for x
    x = 7,629,543,524.94/81,421.07
  6. Step 6: Final answer
    x = 93,704.78

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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.