Home / 85,719.22-128,599.21-35,771.56

Finding the Fourth Proportional to 85,719.22, 128,599.21 and 35,771.56

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Solution

The fourth proportional to 85,719.22, 128,599.21 and 35,771.56 is: 53,665.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,719.22 : 128,599.21 = 35,771.56 : x
  2. Step 2: Convert to fraction form
    85,719.22/128,599.21 = 35,771.56/x
  3. Step 3: Cross multiply
    85,719.22x = 128,599.21 × 35,771.56
  4. Step 4: Simplify right side
    85,719.22x = 4,600,194,356.47
  5. Step 5: Solve for x
    x = 4,600,194,356.47/85,719.22
  6. Step 6: Final answer
    x = 53,665.84

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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.