Home / 80,454,871.40-120,682,307.10-72,392,714.60

Finding the Fourth Proportional to 80,454,871.40, 120,682,307.10 and 72,392,714.60

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Solution

The fourth proportional to 80,454,871.40, 120,682,307.10 and 72,392,714.60 is: 108,589,071.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,454,871.40 : 120,682,307.10 = 72,392,714.60 : x
  2. Step 2: Convert to fraction form
    80,454,871.40/120,682,307.10 = 72,392,714.60/x
  3. Step 3: Cross multiply
    80,454,871.40x = 120,682,307.10 × 72,392,714.60
  4. Step 4: Simplify right side
    80,454,871.40x = 8,736,519,815,159,853
  5. Step 5: Solve for x
    x = 8,736,519,815,159,853/80,454,871.40
  6. Step 6: Final answer
    x = 108,589,071.90

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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.