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Finding the Fourth Proportional to 69,792.08, 96,315.22 and 39,578.64

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Solution

The fourth proportional to 69,792.08, 96,315.22 and 39,578.64 is: 54,619.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,792.08 : 96,315.22 = 39,578.64 : x
  2. Step 2: Convert to fraction form
    69,792.08/96,315.22 = 39,578.64/x
  3. Step 3: Cross multiply
    69,792.08x = 96,315.22 × 39,578.64
  4. Step 4: Simplify right side
    69,792.08x = 3,812,025,418.90
  5. Step 5: Solve for x
    x = 3,812,025,418.90/69,792.08
  6. Step 6: Final answer
    x = 54,619.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.