Home / 85,747.56-128,621.42-35,800.43

Finding the Fourth Proportional to 85,747.56, 128,621.42 and 35,800.43

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Solution

The fourth proportional to 85,747.56, 128,621.42 and 35,800.43 is: 53,700.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,747.56 : 128,621.42 = 35,800.43 : x
  2. Step 2: Convert to fraction form
    85,747.56/128,621.42 = 35,800.43/x
  3. Step 3: Cross multiply
    85,747.56x = 128,621.42 × 35,800.43
  4. Step 4: Simplify right side
    85,747.56x = 4,604,702,178.85
  5. Step 5: Solve for x
    x = 4,604,702,178.85/85,747.56
  6. Step 6: Final answer
    x = 53,700.68

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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.