Home / 91,981.81-126,936.03-51,693.22

Finding the Fourth Proportional to 91,981.81, 126,936.03 and 51,693.22

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Solution

The fourth proportional to 91,981.81, 126,936.03 and 51,693.22 is: 71,337.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,981.81 : 126,936.03 = 51,693.22 : x
  2. Step 2: Convert to fraction form
    91,981.81/126,936.03 = 51,693.22/x
  3. Step 3: Cross multiply
    91,981.81x = 126,936.03 × 51,693.22
  4. Step 4: Simplify right side
    91,981.81x = 6,561,732,124.72
  5. Step 5: Solve for x
    x = 6,561,732,124.72/91,981.81
  6. Step 6: Final answer
    x = 71,337.28

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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.