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Finding the Fourth Proportional to 91,141.48, 125,832.22 and 69,879.88

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Solution

The fourth proportional to 91,141.48, 125,832.22 and 69,879.88 is: 96,477.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,141.48 : 125,832.22 = 69,879.88 : x
  2. Step 2: Convert to fraction form
    91,141.48/125,832.22 = 69,879.88/x
  3. Step 3: Cross multiply
    91,141.48x = 125,832.22 × 69,879.88
  4. Step 4: Simplify right side
    91,141.48x = 8,793,140,433.73
  5. Step 5: Solve for x
    x = 8,793,140,433.73/91,141.48
  6. Step 6: Final answer
    x = 96,477.92

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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.