Home / 85,580.21-128,370.33-32,257.74

Finding the Fourth Proportional to 85,580.21, 128,370.33 and 32,257.74

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Solution

The fourth proportional to 85,580.21, 128,370.33 and 32,257.74 is: 48,386.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,580.21 : 128,370.33 = 32,257.74 : x
  2. Step 2: Convert to fraction form
    85,580.21/128,370.33 = 32,257.74/x
  3. Step 3: Cross multiply
    85,580.21x = 128,370.33 × 32,257.74
  4. Step 4: Simplify right side
    85,580.21x = 4,140,936,728.85
  5. Step 5: Solve for x
    x = 4,140,936,728.85/85,580.21
  6. Step 6: Final answer
    x = 48,386.62

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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.