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Finding the Fourth Proportional to 68,997.64, 103,326.54 and 39,342.28

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Solution

The fourth proportional to 68,997.64, 103,326.54 and 39,342.28 is: 58,916.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,997.64 : 103,326.54 = 39,342.28 : x
  2. Step 2: Convert to fraction form
    68,997.64/103,326.54 = 39,342.28/x
  3. Step 3: Cross multiply
    68,997.64x = 103,326.54 × 39,342.28
  4. Step 4: Simplify right side
    68,997.64x = 4,065,101,668.11
  5. Step 5: Solve for x
    x = 4,065,101,668.11/68,997.64
  6. Step 6: Final answer
    x = 58,916.53

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1.5x scale

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.