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Finding the Fourth Proportional to 75,277.20, 103,621.80 and 65,063.57

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Solution

The fourth proportional to 75,277.20, 103,621.80 and 65,063.57 is: 89,562.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,277.20 : 103,621.80 = 65,063.57 : x
  2. Step 2: Convert to fraction form
    75,277.20/103,621.80 = 65,063.57/x
  3. Step 3: Cross multiply
    75,277.20x = 103,621.80 × 65,063.57
  4. Step 4: Simplify right side
    75,277.20x = 6,742,004,237.83
  5. Step 5: Solve for x
    x = 6,742,004,237.83/75,277.20
  6. Step 6: Final answer
    x = 89,562.37

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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.