Home / 85,414.87-128,134.55-26,255.51

Finding the Fourth Proportional to 85,414.87, 128,134.55 and 26,255.51

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Solution

The fourth proportional to 85,414.87, 128,134.55 and 26,255.51 is: 39,387.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,414.87 : 128,134.55 = 26,255.51 : x
  2. Step 2: Convert to fraction form
    85,414.87/128,134.55 = 26,255.51/x
  3. Step 3: Cross multiply
    85,414.87x = 128,134.55 × 26,255.51
  4. Step 4: Simplify right side
    85,414.87x = 3,364,237,318.20
  5. Step 5: Solve for x
    x = 3,364,237,318.20/85,414.87
  6. Step 6: Final answer
    x = 39,387.02

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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.