Home / 78,829.20-108,784.68-43,019.96

Finding the Fourth Proportional to 78,829.20, 108,784.68 and 43,019.96

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Solution

The fourth proportional to 78,829.20, 108,784.68 and 43,019.96 is: 59,367.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,829.20 : 108,784.68 = 43,019.96 : x
  2. Step 2: Convert to fraction form
    78,829.20/108,784.68 = 43,019.96/x
  3. Step 3: Cross multiply
    78,829.20x = 108,784.68 × 43,019.96
  4. Step 4: Simplify right side
    78,829.20x = 4,679,912,038.29
  5. Step 5: Solve for x
    x = 4,679,912,038.29/78,829.20
  6. Step 6: Final answer
    x = 59,367.75

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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.