Home / 79,138.62-118,535.40-39,626.82

Finding the Fourth Proportional to 79,138.62, 118,535.40 and 39,626.82

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Solution

The fourth proportional to 79,138.62, 118,535.40 and 39,626.82 is: 59,353.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,138.62 : 118,535.40 = 39,626.82 : x
  2. Step 2: Convert to fraction form
    79,138.62/118,535.40 = 39,626.82/x
  3. Step 3: Cross multiply
    79,138.62x = 118,535.40 × 39,626.82
  4. Step 4: Simplify right side
    79,138.62x = 4,697,180,959.43
  5. Step 5: Solve for x
    x = 4,697,180,959.43/79,138.62
  6. Step 6: Final answer
    x = 59,353.84

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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.