Home / 55,783.45-76,979.87-30,289.88

Finding the Fourth Proportional to 55,783.45, 76,979.87 and 30,289.88

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Solution

The fourth proportional to 55,783.45, 76,979.87 and 30,289.88 is: 41,799.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,783.45 : 76,979.87 = 30,289.88 : x
  2. Step 2: Convert to fraction form
    55,783.45/76,979.87 = 30,289.88/x
  3. Step 3: Cross multiply
    55,783.45x = 76,979.87 × 30,289.88
  4. Step 4: Simplify right side
    55,783.45x = 2,331,711,179.30
  5. Step 5: Solve for x
    x = 2,331,711,179.30/55,783.45
  6. Step 6: Final answer
    x = 41,799.34

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1.5x scale

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.