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Finding the Fourth Proportional to 87,396.94, 120,603.13 and 51,573.88

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Solution

The fourth proportional to 87,396.94, 120,603.13 and 51,573.88 is: 71,169.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,396.94 : 120,603.13 = 51,573.88 : x
  2. Step 2: Convert to fraction form
    87,396.94/120,603.13 = 51,573.88/x
  3. Step 3: Cross multiply
    87,396.94x = 120,603.13 × 51,573.88
  4. Step 4: Simplify right side
    87,396.94x = 6,219,971,354.24
  5. Step 5: Solve for x
    x = 6,219,971,354.24/87,396.94
  6. Step 6: Final answer
    x = 71,169.21

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1.5x scale

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.