Home / 81,693.41-122,547.67-31,777.29

Finding the Fourth Proportional to 81,693.41, 122,547.67 and 31,777.29

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Solution

The fourth proportional to 81,693.41, 122,547.67 and 31,777.29 is: 47,668.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,693.41 : 122,547.67 = 31,777.29 : x
  2. Step 2: Convert to fraction form
    81,693.41/122,547.67 = 31,777.29/x
  3. Step 3: Cross multiply
    81,693.41x = 122,547.67 × 31,777.29
  4. Step 4: Simplify right side
    81,693.41x = 3,894,232,768.97
  5. Step 5: Solve for x
    x = 3,894,232,768.97/81,693.41
  6. Step 6: Final answer
    x = 47,668.88

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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.