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Finding the Fourth Proportional to 80,950.60, 121,296.30 and 53,216.20

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Solution

The fourth proportional to 80,950.60, 121,296.30 and 53,216.20 is: 79,739.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,950.60 : 121,296.30 = 53,216.20 : x
  2. Step 2: Convert to fraction form
    80,950.60/121,296.30 = 53,216.20/x
  3. Step 3: Cross multiply
    80,950.60x = 121,296.30 × 53,216.20
  4. Step 4: Simplify right side
    80,950.60x = 6,454,928,160.06
  5. Step 5: Solve for x
    x = 6,454,928,160.06/80,950.60
  6. Step 6: Final answer
    x = 79,739.10

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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.