Home / 87,611.43-120,807.68-59,267.91

Finding the Fourth Proportional to 87,611.43, 120,807.68 and 59,267.91

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Solution

The fourth proportional to 87,611.43, 120,807.68 and 59,267.91 is: 81,724.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,611.43 : 120,807.68 = 59,267.91 : x
  2. Step 2: Convert to fraction form
    87,611.43/120,807.68 = 59,267.91/x
  3. Step 3: Cross multiply
    87,611.43x = 120,807.68 × 59,267.91
  4. Step 4: Simplify right side
    87,611.43x = 7,160,018,409.21
  5. Step 5: Solve for x
    x = 7,160,018,409.21/87,611.43
  6. Step 6: Final answer
    x = 81,724.71

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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.