Home / 86,637.75-129,956.63-31,233.75

Finding the Fourth Proportional to 86,637.75, 129,956.63 and 31,233.75

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Solution

The fourth proportional to 86,637.75, 129,956.63 and 31,233.75 is: 46,850.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,637.75 : 129,956.63 = 31,233.75 : x
  2. Step 2: Convert to fraction form
    86,637.75/129,956.63 = 31,233.75/x
  3. Step 3: Cross multiply
    86,637.75x = 129,956.63 × 31,233.75
  4. Step 4: Simplify right side
    86,637.75x = 4,059,032,736.09
  5. Step 5: Solve for x
    x = 4,059,032,736.09/86,637.75
  6. Step 6: Final answer
    x = 46,850.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.