Home / 85,426.28-128,149.68-35,540.14

Finding the Fourth Proportional to 85,426.28, 128,149.68 and 35,540.14

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Solution

The fourth proportional to 85,426.28, 128,149.68 and 35,540.14 is: 53,314.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,426.28 : 128,149.68 = 35,540.14 : x
  2. Step 2: Convert to fraction form
    85,426.28/128,149.68 = 35,540.14/x
  3. Step 3: Cross multiply
    85,426.28x = 128,149.68 × 35,540.14
  4. Step 4: Simplify right side
    85,426.28x = 4,554,457,381.06
  5. Step 5: Solve for x
    x = 4,554,457,381.06/85,426.28
  6. Step 6: Final answer
    x = 53,314.47

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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.