Home / 86,971.32-120,044.07-51,172.88

Finding the Fourth Proportional to 86,971.32, 120,044.07 and 51,172.88

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Solution

The fourth proportional to 86,971.32, 120,044.07 and 51,172.88 is: 70,632.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,971.32 : 120,044.07 = 51,172.88 : x
  2. Step 2: Convert to fraction form
    86,971.32/120,044.07 = 51,172.88/x
  3. Step 3: Cross multiply
    86,971.32x = 120,044.07 × 51,172.88
  4. Step 4: Simplify right side
    86,971.32x = 6,143,000,188.60
  5. Step 5: Solve for x
    x = 6,143,000,188.60/86,971.32
  6. Step 6: Final answer
    x = 70,632.48

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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.