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Finding the Fourth Proportional to 51,779.45, 71,583.04 and 51,305.81

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Solution

The fourth proportional to 51,779.45, 71,583.04 and 51,305.81 is: 70,928.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,779.45 : 71,583.04 = 51,305.81 : x
  2. Step 2: Convert to fraction form
    51,779.45/71,583.04 = 51,305.81/x
  3. Step 3: Cross multiply
    51,779.45x = 71,583.04 × 51,305.81
  4. Step 4: Simplify right side
    51,779.45x = 3,672,625,555.68
  5. Step 5: Solve for x
    x = 3,672,625,555.68/51,779.45
  6. Step 6: Final answer
    x = 70,928.24

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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.