Home / 72,660.42-109,011.29-28,299.87

Finding the Fourth Proportional to 72,660.42, 109,011.29 and 28,299.87

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Solution

The fourth proportional to 72,660.42, 109,011.29 and 28,299.87 is: 42,457.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,660.42 : 109,011.29 = 28,299.87 : x
  2. Step 2: Convert to fraction form
    72,660.42/109,011.29 = 28,299.87/x
  3. Step 3: Cross multiply
    72,660.42x = 109,011.29 × 28,299.87
  4. Step 4: Simplify right side
    72,660.42x = 3,085,005,194.03
  5. Step 5: Solve for x
    x = 3,085,005,194.03/72,660.42
  6. Step 6: Final answer
    x = 42,457.85

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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.