Home / 69,034.75-103,420.20-57,861.61

Finding the Fourth Proportional to 69,034.75, 103,420.20 and 57,861.61

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Solution

The fourth proportional to 69,034.75, 103,420.20 and 57,861.61 is: 86,681.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,034.75 : 103,420.20 = 57,861.61 : x
  2. Step 2: Convert to fraction form
    69,034.75/103,420.20 = 57,861.61/x
  3. Step 3: Cross multiply
    69,034.75x = 103,420.20 × 57,861.61
  4. Step 4: Simplify right side
    69,034.75x = 5,984,059,278.52
  5. Step 5: Solve for x
    x = 5,984,059,278.52/69,034.75
  6. Step 6: Final answer
    x = 86,681.84

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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.