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Finding the Fourth Proportional to 91,108.80, 125,679.60 and 53,375.76

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Solution

The fourth proportional to 91,108.80, 125,679.60 and 53,375.76 is: 73,628.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,108.80 : 125,679.60 = 53,375.76 : x
  2. Step 2: Convert to fraction form
    91,108.80/125,679.60 = 53,375.76/x
  3. Step 3: Cross multiply
    91,108.80x = 125,679.60 × 53,375.76
  4. Step 4: Simplify right side
    91,108.80x = 6,708,244,166.50
  5. Step 5: Solve for x
    x = 6,708,244,166.50/91,108.80
  6. Step 6: Final answer
    x = 73,628.94

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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.