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Finding the Fourth Proportional to 91,851.80, 126,754.36 and 51,564.53

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Solution

The fourth proportional to 91,851.80, 126,754.36 and 51,564.53 is: 71,158.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,851.80 : 126,754.36 = 51,564.53 : x
  2. Step 2: Convert to fraction form
    91,851.80/126,754.36 = 51,564.53/x
  3. Step 3: Cross multiply
    91,851.80x = 126,754.36 × 51,564.53
  4. Step 4: Simplify right side
    91,851.80x = 6,536,028,107.26
  5. Step 5: Solve for x
    x = 6,536,028,107.26/91,851.80
  6. Step 6: Final answer
    x = 71,158.41

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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.