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Finding the Fourth Proportional to 91,485.70, 126,250.90 and 51,203.19

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Solution

The fourth proportional to 91,485.70, 126,250.90 and 51,203.19 is: 70,660.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,485.70 : 126,250.90 = 51,203.19 : x
  2. Step 2: Convert to fraction form
    91,485.70/126,250.90 = 51,203.19/x
  3. Step 3: Cross multiply
    91,485.70x = 126,250.90 × 51,203.19
  4. Step 4: Simplify right side
    91,485.70x = 6,464,448,743.66
  5. Step 5: Solve for x
    x = 6,464,448,743.66/91,485.70
  6. Step 6: Final answer
    x = 70,660.75

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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.