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Finding the Fourth Proportional to 60,750.59, 91,147.75 and 21,313.85

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Solution

The fourth proportional to 60,750.59, 91,147.75 and 21,313.85 is: 31,978.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,750.59 : 91,147.75 = 21,313.85 : x
  2. Step 2: Convert to fraction form
    60,750.59/91,147.75 = 21,313.85/x
  3. Step 3: Cross multiply
    60,750.59x = 91,147.75 × 21,313.85
  4. Step 4: Simplify right side
    60,750.59x = 1,942,708,962.31
  5. Step 5: Solve for x
    x = 1,942,708,962.31/60,750.59
  6. Step 6: Final answer
    x = 31,978.44

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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.