Home / 78,964.56-108,967.86-43,155.78

Finding the Fourth Proportional to 78,964.56, 108,967.86 and 43,155.78

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Solution

The fourth proportional to 78,964.56, 108,967.86 and 43,155.78 is: 59,553.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,964.56 : 108,967.86 = 43,155.78 : x
  2. Step 2: Convert to fraction form
    78,964.56/108,967.86 = 43,155.78/x
  3. Step 3: Cross multiply
    78,964.56x = 108,967.86 × 43,155.78
  4. Step 4: Simplify right side
    78,964.56x = 4,702,592,993.23
  5. Step 5: Solve for x
    x = 4,702,592,993.23/78,964.56
  6. Step 6: Final answer
    x = 59,553.21

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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.