Home / 75,708.55-113,528.22-28,288.87

Finding the Fourth Proportional to 75,708.55, 113,528.22 and 28,288.87

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Solution

The fourth proportional to 75,708.55, 113,528.22 and 28,288.87 is: 42,420.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,708.55 : 113,528.22 = 28,288.87 : x
  2. Step 2: Convert to fraction form
    75,708.55/113,528.22 = 28,288.87/x
  3. Step 3: Cross multiply
    75,708.55x = 113,528.22 × 28,288.87
  4. Step 4: Simplify right side
    75,708.55x = 3,211,585,056.91
  5. Step 5: Solve for x
    x = 3,211,585,056.91/75,708.55
  6. Step 6: Final answer
    x = 42,420.37

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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.