Home / 80,454,931.40-120,682,397.10-72,392,774.60

Finding the Fourth Proportional to 80,454,931.40, 120,682,397.10 and 72,392,774.60

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Solution

The fourth proportional to 80,454,931.40, 120,682,397.10 and 72,392,774.60 is: 108,589,161.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,454,931.40 : 120,682,397.10 = 72,392,774.60 : x
  2. Step 2: Convert to fraction form
    80,454,931.40/120,682,397.10 = 72,392,774.60/x
  3. Step 3: Cross multiply
    80,454,931.40x = 120,682,397.10 × 72,392,774.60
  4. Step 4: Simplify right side
    80,454,931.40x = 8,736,533,571,447,993
  5. Step 5: Solve for x
    x = 8,736,533,571,447,993/80,454,931.40
  6. Step 6: Final answer
    x = 108,589,161.90

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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.