Home / 68,730.24-103,135.04-37,140.40

Finding the Fourth Proportional to 68,730.24, 103,135.04 and 37,140.40

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Solution

The fourth proportional to 68,730.24, 103,135.04 and 37,140.40 is: 55,732.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,730.24 : 103,135.04 = 37,140.40 : x
  2. Step 2: Convert to fraction form
    68,730.24/103,135.04 = 37,140.40/x
  3. Step 3: Cross multiply
    68,730.24x = 103,135.04 × 37,140.40
  4. Step 4: Simplify right side
    68,730.24x = 3,830,476,639.62
  5. Step 5: Solve for x
    x = 3,830,476,639.62/68,730.24
  6. Step 6: Final answer
    x = 55,732.04

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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.