Home / 86,143.13-129,214.70-26,983.41

Finding the Fourth Proportional to 86,143.13, 129,214.70 and 26,983.41

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Solution

The fourth proportional to 86,143.13, 129,214.70 and 26,983.41 is: 40,475.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,143.13 : 129,214.70 = 26,983.41 : x
  2. Step 2: Convert to fraction form
    86,143.13/129,214.70 = 26,983.41/x
  3. Step 3: Cross multiply
    86,143.13x = 129,214.70 × 26,983.41
  4. Step 4: Simplify right side
    86,143.13x = 3,486,652,709.84
  5. Step 5: Solve for x
    x = 3,486,652,709.84/86,143.13
  6. Step 6: Final answer
    x = 40,475.11

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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.