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Finding the Fourth Proportional to 61,106.50, 91,241.72 and 54,740.28

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Solution

The fourth proportional to 61,106.50, 91,241.72 and 54,740.28 is: 81,735.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,106.50 : 91,241.72 = 54,740.28 : x
  2. Step 2: Convert to fraction form
    61,106.50/91,241.72 = 54,740.28/x
  3. Step 3: Cross multiply
    61,106.50x = 91,241.72 × 54,740.28
  4. Step 4: Simplify right side
    61,106.50x = 4,994,597,163.64
  5. Step 5: Solve for x
    x = 4,994,597,163.64/61,106.50
  6. Step 6: Final answer
    x = 81,735.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.