Home / 80,643,872.40-120,965,808.60-57,969,056.40

Finding the Fourth Proportional to 80,643,872.40, 120,965,808.60 and 57,969,056.40

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Solution

The fourth proportional to 80,643,872.40, 120,965,808.60 and 57,969,056.40 is: 86,953,584.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,643,872.40 : 120,965,808.60 = 57,969,056.40 : x
  2. Step 2: Convert to fraction form
    80,643,872.40/120,965,808.60 = 57,969,056.40/x
  3. Step 3: Cross multiply
    80,643,872.40x = 120,965,808.60 × 57,969,056.40
  4. Step 4: Simplify right side
    80,643,872.40x = 7,012,273,781,205,005
  5. Step 5: Solve for x
    x = 7,012,273,781,205,005/80,643,872.40
  6. Step 6: Final answer
    x = 86,953,584.60

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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.