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Finding the Fourth Proportional to 91,509.60, 126,277.12 and 51,216.48

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Solution

The fourth proportional to 91,509.60, 126,277.12 and 51,216.48 is: 70,675.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,509.60 : 126,277.12 = 51,216.48 : x
  2. Step 2: Convert to fraction form
    91,509.60/126,277.12 = 51,216.48/x
  3. Step 3: Cross multiply
    91,509.60x = 126,277.12 × 51,216.48
  4. Step 4: Simplify right side
    91,509.60x = 6,467,469,590.94
  5. Step 5: Solve for x
    x = 6,467,469,590.94/91,509.60
  6. Step 6: Final answer
    x = 70,675.31

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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.