Home / 85,958.20-128,931.36-26,788.24

Finding the Fourth Proportional to 85,958.20, 128,931.36 and 26,788.24

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Solution

The fourth proportional to 85,958.20, 128,931.36 and 26,788.24 is: 40,180.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,958.20 : 128,931.36 = 26,788.24 : x
  2. Step 2: Convert to fraction form
    85,958.20/128,931.36 = 26,788.24/x
  3. Step 3: Cross multiply
    85,958.20x = 128,931.36 × 26,788.24
  4. Step 4: Simplify right side
    85,958.20x = 3,453,844,215.21
  5. Step 5: Solve for x
    x = 3,453,844,215.21/85,958.20
  6. Step 6: Final answer
    x = 40,180.51

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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.