Home / 61,721.56-85,096.20-50,379.40

Finding the Fourth Proportional to 61,721.56, 85,096.20 and 50,379.40

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Solution

The fourth proportional to 61,721.56, 85,096.20 and 50,379.40 is: 69,458.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,721.56 : 85,096.20 = 50,379.40 : x
  2. Step 2: Convert to fraction form
    61,721.56/85,096.20 = 50,379.40/x
  3. Step 3: Cross multiply
    61,721.56x = 85,096.20 × 50,379.40
  4. Step 4: Simplify right side
    61,721.56x = 4,287,095,498.28
  5. Step 5: Solve for x
    x = 4,287,095,498.28/61,721.56
  6. Step 6: Final answer
    x = 69,458.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.