Home / 42,636.16-63,975.84-28,756

Finding the Fourth Proportional to 42,636.16, 63,975.84 and 28,756

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Solution

The fourth proportional to 42,636.16, 63,975.84 and 28,756 is: 43,148.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,636.16 : 63,975.84 = 28,756 : x
  2. Step 2: Convert to fraction form
    42,636.16/63,975.84 = 28,756/x
  3. Step 3: Cross multiply
    42,636.16x = 63,975.84 × 28,756
  4. Step 4: Simplify right side
    42,636.16x = 1,839,689,255.04
  5. Step 5: Solve for x
    x = 1,839,689,255.04/42,636.16
  6. Step 6: Final answer
    x = 43,148.57

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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.