Home / 80,865.50-121,164.14-49,179.72

Finding the Fourth Proportional to 80,865.50, 121,164.14 and 49,179.72

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Solution

The fourth proportional to 80,865.50, 121,164.14 and 49,179.72 is: 73,688.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,865.50 : 121,164.14 = 49,179.72 : x
  2. Step 2: Convert to fraction form
    80,865.50/121,164.14 = 49,179.72/x
  3. Step 3: Cross multiply
    80,865.50x = 121,164.14 × 49,179.72
  4. Step 4: Simplify right side
    80,865.50x = 5,958,818,602.19
  5. Step 5: Solve for x
    x = 5,958,818,602.19/80,865.50
  6. Step 6: Final answer
    x = 73,688.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.