Home / 86,589.12-129,896.90-36,669.48

Finding the Fourth Proportional to 86,589.12, 129,896.90 and 36,669.48

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Solution

The fourth proportional to 86,589.12, 129,896.90 and 36,669.48 is: 55,009.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,589.12 : 129,896.90 = 36,669.48 : x
  2. Step 2: Convert to fraction form
    86,589.12/129,896.90 = 36,669.48/x
  3. Step 3: Cross multiply
    86,589.12x = 129,896.90 × 36,669.48
  4. Step 4: Simplify right side
    86,589.12x = 4,763,251,593.26
  5. Step 5: Solve for x
    x = 4,763,251,593.26/86,589.12
  6. Step 6: Final answer
    x = 55,009.82

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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.