Home / 72,580.11-108,827.79-28,154.95

Finding the Fourth Proportional to 72,580.11, 108,827.79 and 28,154.95

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Solution

The fourth proportional to 72,580.11, 108,827.79 and 28,154.95 is: 42,215.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,580.11 : 108,827.79 = 28,154.95 : x
  2. Step 2: Convert to fraction form
    72,580.11/108,827.79 = 28,154.95/x
  3. Step 3: Cross multiply
    72,580.11x = 108,827.79 × 28,154.95
  4. Step 4: Simplify right side
    72,580.11x = 3,064,040,608.41
  5. Step 5: Solve for x
    x = 3,064,040,608.41/72,580.11
  6. Step 6: Final answer
    x = 42,215.98

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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.