Home / 86,629.77-129,996.50-79,579.53

Finding the Fourth Proportional to 86,629.77, 129,996.50 and 79,579.53

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Solution

The fourth proportional to 86,629.77, 129,996.50 and 79,579.53 is: 119,416.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,629.77 : 129,996.50 = 79,579.53 : x
  2. Step 2: Convert to fraction form
    86,629.77/129,996.50 = 79,579.53/x
  3. Step 3: Cross multiply
    86,629.77x = 129,996.50 × 79,579.53
  4. Step 4: Simplify right side
    86,629.77x = 10,345,059,973.75
  5. Step 5: Solve for x
    x = 10,345,059,973.75/86,629.77
  6. Step 6: Final answer
    x = 119,416.92

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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.