Home / 85,474.10-128,234.85-35,577.70

Finding the Fourth Proportional to 85,474.10, 128,234.85 and 35,577.70

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Solution

The fourth proportional to 85,474.10, 128,234.85 and 35,577.70 is: 53,376.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,474.10 : 128,234.85 = 35,577.70 : x
  2. Step 2: Convert to fraction form
    85,474.10/128,234.85 = 35,577.70/x
  3. Step 3: Cross multiply
    85,474.10x = 128,234.85 × 35,577.70
  4. Step 4: Simplify right side
    85,474.10x = 4,562,301,022.85
  5. Step 5: Solve for x
    x = 4,562,301,022.85/85,474.10
  6. Step 6: Final answer
    x = 53,376.41

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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.