Home / 87,712.87-131,611.43-68,875.51

Finding the Fourth Proportional to 87,712.87, 131,611.43 and 68,875.51

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Solution

The fourth proportional to 87,712.87, 131,611.43 and 68,875.51 is: 103,346.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,712.87 : 131,611.43 = 68,875.51 : x
  2. Step 2: Convert to fraction form
    87,712.87/131,611.43 = 68,875.51/x
  3. Step 3: Cross multiply
    87,712.87x = 131,611.43 × 68,875.51
  4. Step 4: Simplify right side
    87,712.87x = 9,064,804,363.08
  5. Step 5: Solve for x
    x = 9,064,804,363.08/87,712.87
  6. Step 6: Final answer
    x = 103,346.34

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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.