Home / 85,847.18-128,753.24-32,520.78

Finding the Fourth Proportional to 85,847.18, 128,753.24 and 32,520.78

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Solution

The fourth proportional to 85,847.18, 128,753.24 and 32,520.78 is: 48,774.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,847.18 : 128,753.24 = 32,520.78 : x
  2. Step 2: Convert to fraction form
    85,847.18/128,753.24 = 32,520.78/x
  3. Step 3: Cross multiply
    85,847.18x = 128,753.24 × 32,520.78
  4. Step 4: Simplify right side
    85,847.18x = 4,187,155,268.85
  5. Step 5: Solve for x
    x = 4,187,155,268.85/85,847.18
  6. Step 6: Final answer
    x = 48,774.52

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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.