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Finding the Fourth Proportional to 80,883.53, 121,338.65 and 36,509.30

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Solution

The fourth proportional to 80,883.53, 121,338.65 and 36,509.30 is: 54,769.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,883.53 : 121,338.65 = 36,509.30 : x
  2. Step 2: Convert to fraction form
    80,883.53/121,338.65 = 36,509.30/x
  3. Step 3: Cross multiply
    80,883.53x = 121,338.65 × 36,509.30
  4. Step 4: Simplify right side
    80,883.53x = 4,429,988,659.02
  5. Step 5: Solve for x
    x = 4,429,988,659.02/80,883.53
  6. Step 6: Final answer
    x = 54,769.98

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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.