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Finding the Fourth Proportional to 91,314.36, 126,048.96 and 81,737.37

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Solution

The fourth proportional to 91,314.36, 126,048.96 and 81,737.37 is: 112,829.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,314.36 : 126,048.96 = 81,737.37 : x
  2. Step 2: Convert to fraction form
    91,314.36/126,048.96 = 81,737.37/x
  3. Step 3: Cross multiply
    91,314.36x = 126,048.96 × 81,737.37
  4. Step 4: Simplify right side
    91,314.36x = 10,302,910,481.64
  5. Step 5: Solve for x
    x = 10,302,910,481.64/91,314.36
  6. Step 6: Final answer
    x = 112,829.03

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1.5x scale

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.