Home / 79,639.38-119,376.45-39,631.86

Finding the Fourth Proportional to 79,639.38, 119,376.45 and 39,631.86

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Solution

The fourth proportional to 79,639.38, 119,376.45 and 39,631.86 is: 59,406.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,639.38 : 119,376.45 = 39,631.86 : x
  2. Step 2: Convert to fraction form
    79,639.38/119,376.45 = 39,631.86/x
  3. Step 3: Cross multiply
    79,639.38x = 119,376.45 × 39,631.86
  4. Step 4: Simplify right side
    79,639.38x = 4,731,110,753.70
  5. Step 5: Solve for x
    x = 4,731,110,753.70/79,639.38
  6. Step 6: Final answer
    x = 59,406.67

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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.