Home / 85,715.21-128,593.20-35,767.55

Finding the Fourth Proportional to 85,715.21, 128,593.20 and 35,767.55

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Solution

The fourth proportional to 85,715.21, 128,593.20 and 35,767.55 is: 53,659.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,715.21 : 128,593.20 = 35,767.55 : x
  2. Step 2: Convert to fraction form
    85,715.21/128,593.20 = 35,767.55/x
  3. Step 3: Cross multiply
    85,715.21x = 128,593.20 × 35,767.55
  4. Step 4: Simplify right side
    85,715.21x = 4,599,463,710.66
  5. Step 5: Solve for x
    x = 4,599,463,710.66/85,715.21
  6. Step 6: Final answer
    x = 53,659.83

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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.