Home / 47,769.84-65,928.60-28,907.28

Finding the Fourth Proportional to 47,769.84, 65,928.60 and 28,907.28

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Solution

The fourth proportional to 47,769.84, 65,928.60 and 28,907.28 is: 39,895.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,769.84 : 65,928.60 = 28,907.28 : x
  2. Step 2: Convert to fraction form
    47,769.84/65,928.60 = 28,907.28/x
  3. Step 3: Cross multiply
    47,769.84x = 65,928.60 × 28,907.28
  4. Step 4: Simplify right side
    47,769.84x = 1,905,816,500.21
  5. Step 5: Solve for x
    x = 1,905,816,500.21/47,769.84
  6. Step 6: Final answer
    x = 39,895.81

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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.