Home / 79,723,321.80-119,584,982.70-72,668,934.60

Finding the Fourth Proportional to 79,723,321.80, 119,584,982.70 and 72,668,934.60

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Solution

The fourth proportional to 79,723,321.80, 119,584,982.70 and 72,668,934.60 is: 109,003,401.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,723,321.80 : 119,584,982.70 = 72,668,934.60 : x
  2. Step 2: Convert to fraction form
    79,723,321.80/119,584,982.70 = 72,668,934.60/x
  3. Step 3: Cross multiply
    79,723,321.80x = 119,584,982.70 × 72,668,934.60
  4. Step 4: Simplify right side
    79,723,321.80x = 8,690,113,286,968,431
  5. Step 5: Solve for x
    x = 8,690,113,286,968,431/79,723,321.80
  6. Step 6: Final answer
    x = 109,003,401.90

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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.