Home / 86,983.61-120,035.34-51,175.94

Finding the Fourth Proportional to 86,983.61, 120,035.34 and 51,175.94

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Solution

The fourth proportional to 86,983.61, 120,035.34 and 51,175.94 is: 70,621.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,983.61 : 120,035.34 = 51,175.94 : x
  2. Step 2: Convert to fraction form
    86,983.61/120,035.34 = 51,175.94/x
  3. Step 3: Cross multiply
    86,983.61x = 120,035.34 × 51,175.94
  4. Step 4: Simplify right side
    86,983.61x = 6,142,920,757.54
  5. Step 5: Solve for x
    x = 6,142,920,757.54/86,983.61
  6. Step 6: Final answer
    x = 70,621.59

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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.