Home / 72,123.30-108,184.94-30,002.58

Finding the Fourth Proportional to 72,123.30, 108,184.94 and 30,002.58

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Solution

The fourth proportional to 72,123.30, 108,184.94 and 30,002.58 is: 45,003.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,123.30 : 108,184.94 = 30,002.58 : x
  2. Step 2: Convert to fraction form
    72,123.30/108,184.94 = 30,002.58/x
  3. Step 3: Cross multiply
    72,123.30x = 108,184.94 × 30,002.58
  4. Step 4: Simplify right side
    72,123.30x = 3,245,827,167.13
  5. Step 5: Solve for x
    x = 3,245,827,167.13/72,123.30
  6. Step 6: Final answer
    x = 45,003.86

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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.