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Finding the Fourth Proportional to 80,911.59, 121,289.01 and 30,953.22

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Solution

The fourth proportional to 80,911.59, 121,289.01 and 30,953.22 is: 46,399.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,911.59 : 121,289.01 = 30,953.22 : x
  2. Step 2: Convert to fraction form
    80,911.59/121,289.01 = 30,953.22/x
  3. Step 3: Cross multiply
    80,911.59x = 121,289.01 × 30,953.22
  4. Step 4: Simplify right side
    80,911.59x = 3,754,285,410.11
  5. Step 5: Solve for x
    x = 3,754,285,410.11/80,911.59
  6. Step 6: Final answer
    x = 46,399.85

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1.5x scale

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.