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Finding the Fourth Proportional to 80,113.64, 120,053.58 and 45,063.08

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Solution

The fourth proportional to 80,113.64, 120,053.58 and 45,063.08 is: 67,528.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,113.64 : 120,053.58 = 45,063.08 : x
  2. Step 2: Convert to fraction form
    80,113.64/120,053.58 = 45,063.08/x
  3. Step 3: Cross multiply
    80,113.64x = 120,053.58 × 45,063.08
  4. Step 4: Simplify right side
    80,113.64x = 5,409,984,079.83
  5. Step 5: Solve for x
    x = 5,409,984,079.83/80,113.64
  6. Step 6: Final answer
    x = 67,528.88

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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.