Home / 71,977.09-99,323.88-39,712.09

Finding the Fourth Proportional to 71,977.09, 99,323.88 and 39,712.09

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Solution

The fourth proportional to 71,977.09, 99,323.88 and 39,712.09 is: 54,800.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,977.09 : 99,323.88 = 39,712.09 : x
  2. Step 2: Convert to fraction form
    71,977.09/99,323.88 = 39,712.09/x
  3. Step 3: Cross multiply
    71,977.09x = 99,323.88 × 39,712.09
  4. Step 4: Simplify right side
    71,977.09x = 3,944,358,861.71
  5. Step 5: Solve for x
    x = 3,944,358,861.71/71,977.09
  6. Step 6: Final answer
    x = 54,800.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.