Home / 76,891.33-115,281.63-47,247.92

Finding the Fourth Proportional to 76,891.33, 115,281.63 and 47,247.92

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Solution

The fourth proportional to 76,891.33, 115,281.63 and 47,247.92 is: 70,837.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,891.33 : 115,281.63 = 47,247.92 : x
  2. Step 2: Convert to fraction form
    76,891.33/115,281.63 = 47,247.92/x
  3. Step 3: Cross multiply
    76,891.33x = 115,281.63 × 47,247.92
  4. Step 4: Simplify right side
    76,891.33x = 5,446,816,419.06
  5. Step 5: Solve for x
    x = 5,446,816,419.06/76,891.33
  6. Step 6: Final answer
    x = 70,837.85

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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.