Home / 85,445.10-128,190.05-32,856.30

Finding the Fourth Proportional to 85,445.10, 128,190.05 and 32,856.30

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Solution

The fourth proportional to 85,445.10, 128,190.05 and 32,856.30 is: 49,293.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,445.10 : 128,190.05 = 32,856.30 : x
  2. Step 2: Convert to fraction form
    85,445.10/128,190.05 = 32,856.30/x
  3. Step 3: Cross multiply
    85,445.10x = 128,190.05 × 32,856.30
  4. Step 4: Simplify right side
    85,445.10x = 4,211,850,739.82
  5. Step 5: Solve for x
    x = 4,211,850,739.82/85,445.10
  6. Step 6: Final answer
    x = 49,293.06

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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.