Home / 78,826.65-108,778.73-43,017.09

Finding the Fourth Proportional to 78,826.65, 108,778.73 and 43,017.09

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Solution

The fourth proportional to 78,826.65, 108,778.73 and 43,017.09 is: 59,362.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,826.65 : 108,778.73 = 43,017.09 : x
  2. Step 2: Convert to fraction form
    78,826.65/108,778.73 = 43,017.09/x
  3. Step 3: Cross multiply
    78,826.65x = 108,778.73 × 43,017.09
  4. Step 4: Simplify right side
    78,826.65x = 4,679,344,203.41
  5. Step 5: Solve for x
    x = 4,679,344,203.41/78,826.65
  6. Step 6: Final answer
    x = 59,362.46

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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.