Home / 86,628.30-129,991.05-36,699.90

Finding the Fourth Proportional to 86,628.30, 129,991.05 and 36,699.90

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Solution

The fourth proportional to 86,628.30, 129,991.05 and 36,699.90 is: 55,070.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,628.30 : 129,991.05 = 36,699.90 : x
  2. Step 2: Convert to fraction form
    86,628.30/129,991.05 = 36,699.90/x
  3. Step 3: Cross multiply
    86,628.30x = 129,991.05 × 36,699.90
  4. Step 4: Simplify right side
    86,628.30x = 4,770,658,535.90
  5. Step 5: Solve for x
    x = 4,770,658,535.90/86,628.30
  6. Step 6: Final answer
    x = 55,070.44

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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.