Home / 75,078.26-103,649.75-52,142.10

Finding the Fourth Proportional to 75,078.26, 103,649.75 and 52,142.10

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Solution

The fourth proportional to 75,078.26, 103,649.75 and 52,142.10 is: 71,985.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,078.26 : 103,649.75 = 52,142.10 : x
  2. Step 2: Convert to fraction form
    75,078.26/103,649.75 = 52,142.10/x
  3. Step 3: Cross multiply
    75,078.26x = 103,649.75 × 52,142.10
  4. Step 4: Simplify right side
    75,078.26x = 5,404,515,368.76
  5. Step 5: Solve for x
    x = 5,404,515,368.76/75,078.26
  6. Step 6: Final answer
    x = 71,985.10

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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.