Home / 80,007,717.80-120,011,576.70-76,872,434.60

Finding the Fourth Proportional to 80,007,717.80, 120,011,576.70 and 76,872,434.60

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Solution

The fourth proportional to 80,007,717.80, 120,011,576.70 and 76,872,434.60 is: 115,308,651.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,007,717.80 : 120,011,576.70 = 76,872,434.60 : x
  2. Step 2: Convert to fraction form
    80,007,717.80/120,011,576.70 = 76,872,434.60/x
  3. Step 3: Cross multiply
    80,007,717.80x = 120,011,576.70 × 76,872,434.60
  4. Step 4: Simplify right side
    80,007,717.80x = 9,225,582,081,113,634
  5. Step 5: Solve for x
    x = 9,225,582,081,113,634/80,007,717.80
  6. Step 6: Final answer
    x = 115,308,651.90

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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.