Home / 75,720.57-113,541.39-28,296.69

Finding the Fourth Proportional to 75,720.57, 113,541.39 and 28,296.69

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Solution

The fourth proportional to 75,720.57, 113,541.39 and 28,296.69 is: 42,430.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,720.57 : 113,541.39 = 28,296.69 : x
  2. Step 2: Convert to fraction form
    75,720.57/113,541.39 = 28,296.69/x
  3. Step 3: Cross multiply
    75,720.57x = 113,541.39 × 28,296.69
  4. Step 4: Simplify right side
    75,720.57x = 3,212,845,515.00
  5. Step 5: Solve for x
    x = 3,212,845,515.00/75,720.57
  6. Step 6: Final answer
    x = 42,430.29

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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.