Home / 80,216.10-120,324.15-53,777.70

Finding the Fourth Proportional to 80,216.10, 120,324.15 and 53,777.70

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Solution

The fourth proportional to 80,216.10, 120,324.15 and 53,777.70 is: 80,666.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,216.10 : 120,324.15 = 53,777.70 : x
  2. Step 2: Convert to fraction form
    80,216.10/120,324.15 = 53,777.70/x
  3. Step 3: Cross multiply
    80,216.10x = 120,324.15 × 53,777.70
  4. Step 4: Simplify right side
    80,216.10x = 6,470,756,041.46
  5. Step 5: Solve for x
    x = 6,470,756,041.46/80,216.10
  6. Step 6: Final answer
    x = 80,666.55

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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.