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Finding the Fourth Proportional to 68,649.11, 94,735.31 and 38,434.31

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Solution

The fourth proportional to 68,649.11, 94,735.31 and 38,434.31 is: 53,039.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,649.11 : 94,735.31 = 38,434.31 : x
  2. Step 2: Convert to fraction form
    68,649.11/94,735.31 = 38,434.31/x
  3. Step 3: Cross multiply
    68,649.11x = 94,735.31 × 38,434.31
  4. Step 4: Simplify right side
    68,649.11x = 3,641,085,606.64
  5. Step 5: Solve for x
    x = 3,641,085,606.64/68,649.11
  6. Step 6: Final answer
    x = 53,039.08

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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.