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Finding the Fourth Proportional to 91,000.80, 125,579.37 and 49,608.15

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Solution

The fourth proportional to 91,000.80, 125,579.37 and 49,608.15 is: 68,458.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,000.80 : 125,579.37 = 49,608.15 : x
  2. Step 2: Convert to fraction form
    91,000.80/125,579.37 = 49,608.15/x
  3. Step 3: Cross multiply
    91,000.80x = 125,579.37 × 49,608.15
  4. Step 4: Simplify right side
    91,000.80x = 6,229,760,223.87
  5. Step 5: Solve for x
    x = 6,229,760,223.87/91,000.80
  6. Step 6: Final answer
    x = 68,458.30

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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.