Home / 72,672.09-108,987.08-28,288.95

Finding the Fourth Proportional to 72,672.09, 108,987.08 and 28,288.95

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Solution

The fourth proportional to 72,672.09, 108,987.08 and 28,288.95 is: 42,425.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,672.09 : 108,987.08 = 28,288.95 : x
  2. Step 2: Convert to fraction form
    72,672.09/108,987.08 = 28,288.95/x
  3. Step 3: Cross multiply
    72,672.09x = 108,987.08 × 28,288.95
  4. Step 4: Simplify right side
    72,672.09x = 3,083,129,915.32
  5. Step 5: Solve for x
    x = 3,083,129,915.32/72,672.09
  6. Step 6: Final answer
    x = 42,425.23

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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.