Home / 80,941.40-121,412.10-45,366.20

Finding the Fourth Proportional to 80,941.40, 121,412.10 and 45,366.20

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Solution

The fourth proportional to 80,941.40, 121,412.10 and 45,366.20 is: 68,049.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,941.40 : 121,412.10 = 45,366.20 : x
  2. Step 2: Convert to fraction form
    80,941.40/121,412.10 = 45,366.20/x
  3. Step 3: Cross multiply
    80,941.40x = 121,412.10 × 45,366.20
  4. Step 4: Simplify right side
    80,941.40x = 5,508,005,611.02
  5. Step 5: Solve for x
    x = 5,508,005,611.02/80,941.40
  6. Step 6: Final answer
    x = 68,049.30

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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.