Home / 87,085.73-120,203.82-56,875.74

Finding the Fourth Proportional to 87,085.73, 120,203.82 and 56,875.74

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Solution

The fourth proportional to 87,085.73, 120,203.82 and 56,875.74 is: 78,505.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,085.73 : 120,203.82 = 56,875.74 : x
  2. Step 2: Convert to fraction form
    87,085.73/120,203.82 = 56,875.74/x
  3. Step 3: Cross multiply
    87,085.73x = 120,203.82 × 56,875.74
  4. Step 4: Simplify right side
    87,085.73x = 6,836,681,936.75
  5. Step 5: Solve for x
    x = 6,836,681,936.75/87,085.73
  6. Step 6: Final answer
    x = 78,505.19

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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.