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Finding the Fourth Proportional to 68,689.66, 94,792.69 and 40,008.57

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Solution

The fourth proportional to 68,689.66, 94,792.69 and 40,008.57 is: 55,212.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,689.66 : 94,792.69 = 40,008.57 : x
  2. Step 2: Convert to fraction form
    68,689.66/94,792.69 = 40,008.57/x
  3. Step 3: Cross multiply
    68,689.66x = 94,792.69 × 40,008.57
  4. Step 4: Simplify right side
    68,689.66x = 3,792,519,973.35
  5. Step 5: Solve for x
    x = 3,792,519,973.35/68,689.66
  6. Step 6: Final answer
    x = 55,212.39

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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.