Home / 72,915.27-109,491.56-45,012.69

Finding the Fourth Proportional to 72,915.27, 109,491.56 and 45,012.69

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Solution

The fourth proportional to 72,915.27, 109,491.56 and 45,012.69 is: 67,592.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,915.27 : 109,491.56 = 45,012.69 : x
  2. Step 2: Convert to fraction form
    72,915.27/109,491.56 = 45,012.69/x
  3. Step 3: Cross multiply
    72,915.27x = 109,491.56 × 45,012.69
  4. Step 4: Simplify right side
    72,915.27x = 4,928,509,965.72
  5. Step 5: Solve for x
    x = 4,928,509,965.72/72,915.27
  6. Step 6: Final answer
    x = 67,592.29

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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.