Home / 87,270.43-120,405.51-53,261.90

Finding the Fourth Proportional to 87,270.43, 120,405.51 and 53,261.90

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Solution

The fourth proportional to 87,270.43, 120,405.51 and 53,261.90 is: 73,484.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,270.43 : 120,405.51 = 53,261.90 : x
  2. Step 2: Convert to fraction form
    87,270.43/120,405.51 = 53,261.90/x
  3. Step 3: Cross multiply
    87,270.43x = 120,405.51 × 53,261.90
  4. Step 4: Simplify right side
    87,270.43x = 6,413,026,099.63
  5. Step 5: Solve for x
    x = 6,413,026,099.63/87,270.43
  6. Step 6: Final answer
    x = 73,484.52

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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.