Home / 75,108.92-103,539.88-57,172.68

Finding the Fourth Proportional to 75,108.92, 103,539.88 and 57,172.68

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Solution

The fourth proportional to 75,108.92, 103,539.88 and 57,172.68 is: 78,814.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,108.92 : 103,539.88 = 57,172.68 : x
  2. Step 2: Convert to fraction form
    75,108.92/103,539.88 = 57,172.68/x
  3. Step 3: Cross multiply
    75,108.92x = 103,539.88 × 57,172.68
  4. Step 4: Simplify right side
    75,108.92x = 5,919,652,426.48
  5. Step 5: Solve for x
    x = 5,919,652,426.48/75,108.92
  6. Step 6: Final answer
    x = 78,814.24

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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.