Home / 86,169.84-129,290.38-38,113.18

Finding the Fourth Proportional to 86,169.84, 129,290.38 and 38,113.18

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Solution

The fourth proportional to 86,169.84, 129,290.38 and 38,113.18 is: 57,185.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,169.84 : 129,290.38 = 38,113.18 : x
  2. Step 2: Convert to fraction form
    86,169.84/129,290.38 = 38,113.18/x
  3. Step 3: Cross multiply
    86,169.84x = 129,290.38 × 38,113.18
  4. Step 4: Simplify right side
    86,169.84x = 4,927,667,525.21
  5. Step 5: Solve for x
    x = 4,927,667,525.21/86,169.84
  6. Step 6: Final answer
    x = 57,185.52

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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.