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Finding the Fourth Proportional to 80,491.60, 109,655.20 and 80,491.60

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Solution

The fourth proportional to 80,491.60, 109,655.20 and 80,491.60 is: 109,655.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,491.60 : 109,655.20 = 80,491.60 : x
  2. Step 2: Convert to fraction form
    80,491.60/109,655.20 = 80,491.60/x
  3. Step 3: Cross multiply
    80,491.60x = 109,655.20 × 80,491.60
  4. Step 4: Simplify right side
    80,491.60x = 8,826,322,496.32
  5. Step 5: Solve for x
    x = 8,826,322,496.32/80,491.60
  6. Step 6: Final answer
    x = 109,655.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.