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Finding the Fourth Proportional to 75,140.25, 103,696.80 and 41,606.25

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Solution

The fourth proportional to 75,140.25, 103,696.80 and 41,606.25 is: 57,418.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,140.25 : 103,696.80 = 41,606.25 : x
  2. Step 2: Convert to fraction form
    75,140.25/103,696.80 = 41,606.25/x
  3. Step 3: Cross multiply
    75,140.25x = 103,696.80 × 41,606.25
  4. Step 4: Simplify right side
    75,140.25x = 4,314,434,985
  5. Step 5: Solve for x
    x = 4,314,434,985/75,140.25
  6. Step 6: Final answer
    x = 57,418.43

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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.