Home / 85,971.20-128,847.45-41,502.20

Finding the Fourth Proportional to 85,971.20, 128,847.45 and 41,502.20

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Solution

The fourth proportional to 85,971.20, 128,847.45 and 41,502.20 is: 62,200.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,971.20 : 128,847.45 = 41,502.20 : x
  2. Step 2: Convert to fraction form
    85,971.20/128,847.45 = 41,502.20/x
  3. Step 3: Cross multiply
    85,971.20x = 128,847.45 × 41,502.20
  4. Step 4: Simplify right side
    85,971.20x = 5,347,452,639.39
  5. Step 5: Solve for x
    x = 5,347,452,639.39/85,971.20
  6. Step 6: Final answer
    x = 62,200.51

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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.