Home / 85,919.28-128,823.84-36,034.56

Finding the Fourth Proportional to 85,919.28, 128,823.84 and 36,034.56

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Solution

The fourth proportional to 85,919.28, 128,823.84 and 36,034.56 is: 54,028.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,919.28 : 128,823.84 = 36,034.56 : x
  2. Step 2: Convert to fraction form
    85,919.28/128,823.84 = 36,034.56/x
  3. Step 3: Cross multiply
    85,919.28x = 128,823.84 × 36,034.56
  4. Step 4: Simplify right side
    85,919.28x = 4,642,110,391.91
  5. Step 5: Solve for x
    x = 4,642,110,391.91/85,919.28
  6. Step 6: Final answer
    x = 54,028.74

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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.