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Finding the Fourth Proportional to 84,252,002.80, 126,378,005.01 and 84,252,002.80

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Solution

The fourth proportional to 84,252,002.80, 126,378,005.01 and 84,252,002.80 is: 126,378,005.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,252,002.80 : 126,378,005.01 = 84,252,002.80 : x
  2. Step 2: Convert to fraction form
    84,252,002.80/126,378,005.01 = 84,252,002.80/x
  3. Step 3: Cross multiply
    84,252,002.80x = 126,378,005.01 × 84,252,002.80
  4. Step 4: Simplify right side
    84,252,002.80x = 10,647,600,031,960,934
  5. Step 5: Solve for x
    x = 10,647,600,031,960,934/84,252,002.80
  6. Step 6: Final answer
    x = 126,378,005.01

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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.