Home / 287,452.26-431,145.36-77,073.66

Finding the Fourth Proportional to 287,452.26, 431,145.36 and 77,073.66

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Solution

The fourth proportional to 287,452.26, 431,145.36 and 77,073.66 is: 115,601.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,452.26 : 431,145.36 = 77,073.66 : x
  2. Step 2: Convert to fraction form
    287,452.26/431,145.36 = 77,073.66/x
  3. Step 3: Cross multiply
    287,452.26x = 431,145.36 × 77,073.66
  4. Step 4: Simplify right side
    287,452.26x = 33,229,950,887.22
  5. Step 5: Solve for x
    x = 33,229,950,887.22/287,452.26
  6. Step 6: Final answer
    x = 115,601.63

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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.