Home / 86,107.28-129,157.32-29,960.12

Finding the Fourth Proportional to 86,107.28, 129,157.32 and 29,960.12

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Solution

The fourth proportional to 86,107.28, 129,157.32 and 29,960.12 is: 44,938.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,107.28 : 129,157.32 = 29,960.12 : x
  2. Step 2: Convert to fraction form
    86,107.28/129,157.32 = 29,960.12/x
  3. Step 3: Cross multiply
    86,107.28x = 129,157.32 × 29,960.12
  4. Step 4: Simplify right side
    86,107.28x = 3,869,568,806.08
  5. Step 5: Solve for x
    x = 3,869,568,806.08/86,107.28
  6. Step 6: Final answer
    x = 44,938.93

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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.