Home / 86,142.75-129,214.13-26,983.04

Finding the Fourth Proportional to 86,142.75, 129,214.13 and 26,983.04

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Solution

The fourth proportional to 86,142.75, 129,214.13 and 26,983.04 is: 40,474.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,142.75 : 129,214.13 = 26,983.04 : x
  2. Step 2: Convert to fraction form
    86,142.75/129,214.13 = 26,983.04/x
  3. Step 3: Cross multiply
    86,142.75x = 129,214.13 × 26,983.04
  4. Step 4: Simplify right side
    86,142.75x = 3,486,589,392.28
  5. Step 5: Solve for x
    x = 3,486,589,392.28/86,142.75
  6. Step 6: Final answer
    x = 40,474.55

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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.