Home / 72,631.76-108,836.64-30,488.96

Finding the Fourth Proportional to 72,631.76, 108,836.64 and 30,488.96

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Solution

The fourth proportional to 72,631.76, 108,836.64 and 30,488.96 is: 45,686.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,631.76 : 108,836.64 = 30,488.96 : x
  2. Step 2: Convert to fraction form
    72,631.76/108,836.64 = 30,488.96/x
  3. Step 3: Cross multiply
    72,631.76x = 108,836.64 × 30,488.96
  4. Step 4: Simplify right side
    72,631.76x = 3,318,315,963.49
  5. Step 5: Solve for x
    x = 3,318,315,963.49/72,631.76
  6. Step 6: Final answer
    x = 45,686.85

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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.