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Finding the Fourth Proportional to 86,992.82, 120,044.41 and 51,175.91

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Solution

The fourth proportional to 86,992.82, 120,044.41 and 51,175.91 is: 70,619.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,992.82 : 120,044.41 = 51,175.91 : x
  2. Step 2: Convert to fraction form
    86,992.82/120,044.41 = 51,175.91/x
  3. Step 3: Cross multiply
    86,992.82x = 120,044.41 × 51,175.91
  4. Step 4: Simplify right side
    86,992.82x = 6,143,381,666.28
  5. Step 5: Solve for x
    x = 6,143,381,666.28/86,992.82
  6. Step 6: Final answer
    x = 70,619.41

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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.