Home / 87,118.31-120,265.51-58,427.47

Finding the Fourth Proportional to 87,118.31, 120,265.51 and 58,427.47

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Solution

The fourth proportional to 87,118.31, 120,265.51 and 58,427.47 is: 80,658.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,118.31 : 120,265.51 = 58,427.47 : x
  2. Step 2: Convert to fraction form
    87,118.31/120,265.51 = 58,427.47/x
  3. Step 3: Cross multiply
    87,118.31x = 120,265.51 × 58,427.47
  4. Step 4: Simplify right side
    87,118.31x = 7,026,809,477.56
  5. Step 5: Solve for x
    x = 7,026,809,477.56/87,118.31
  6. Step 6: Final answer
    x = 80,658.24

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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.