Home / 103,639.64-155,469.18-41,315

Finding the Fourth Proportional to 103,639.64, 155,469.18 and 41,315

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Solution

The fourth proportional to 103,639.64, 155,469.18 and 41,315 is: 61,976.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,639.64 : 155,469.18 = 41,315 : x
  2. Step 2: Convert to fraction form
    103,639.64/155,469.18 = 41,315/x
  3. Step 3: Cross multiply
    103,639.64x = 155,469.18 × 41,315
  4. Step 4: Simplify right side
    103,639.64x = 6,423,209,171.70
  5. Step 5: Solve for x
    x = 6,423,209,171.70/103,639.64
  6. Step 6: Final answer
    x = 61,976.37

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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.