Home / 78,824.65-108,775.96-43,015.09

Finding the Fourth Proportional to 78,824.65, 108,775.96 and 43,015.09

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Solution

The fourth proportional to 78,824.65, 108,775.96 and 43,015.09 is: 59,359.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,824.65 : 108,775.96 = 43,015.09 : x
  2. Step 2: Convert to fraction form
    78,824.65/108,775.96 = 43,015.09/x
  3. Step 3: Cross multiply
    78,824.65x = 108,775.96 × 43,015.09
  4. Step 4: Simplify right side
    78,824.65x = 4,679,007,709.24
  5. Step 5: Solve for x
    x = 4,679,007,709.24/78,824.65
  6. Step 6: Final answer
    x = 59,359.70

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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.